Securities code: 003019 Securities abbreviation: Chenzhan Optoelectronics Announcement No.: 2026-006
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Regarding the increase in 2026
Announcement of expected daily related-party transaction amount
The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete, and that there are no false records, misleading statements or major omissions.
Important content reminder:
1. Whether it needs to be submitted to the shareholders’ meeting for review: No
2. The impact of the new daily related transactions on the listed company: Chenzhan Optoelectronics (Xiamen) Co., Ltd. (hereinafter referred to as the "Company", "Chenzhan Optoelectronics") The expected related transactions this time belong to the company's daily related transactions. Based on the principle of fairness and reasonableness, the transaction price is based on the market price, and the payment arrangements, settlement methods, etc. are determined by both parties through consultation with reference to market industry practices. There will be no behavior that damages the interests of the company and all shareholders, it will not affect the company's independence, and it will not form a greater dependence on related parties.
1. Basic situation of daily related transactions
(1) Review procedures for the performance of daily related transactions
The company held the 14th meeting of the third board of directors and the first special meeting of independent directors in 2025 on November 25, 2025. It held the second extraordinary shareholders' meeting in 2025 on December 11, 2025, and reviewed and approved the "Proposal on Estimated Daily Related Transactions in 2026". For details, please refer to the company's "Certificate" in the designated information disclosure media. The "Announcement on Estimated Daily Related Transactions in 2026" (Announcement No.: 2025-069) and the "Announcement on the Resolution of the Second Extraordinary Shareholders Meeting in 2025" (Announcement No.: 2025-075) disclosed by Securities Times, China Securities Journal, Shanghai Securities News, Securities Daily and cninfo.com (www.cninfo.com.cn).
The company held the 15th meeting of the third board of directors on February 11, 2026, and reviewed and approved the "Proposal on Increasing the Estimated Daily Amount of Related Transactions in 2026". In 2026, the company and its subsidiaries expect to increase the daily related purchase amount to the related party Shaanxi Ruixun Electronic Information Technology Co., Ltd. (hereinafter referred to as "Shaanxi Ruixun") by 30 million yuan, and increase the daily related sales amount by 25 million yuan. After the addition, daily related purchases from Shaanxi Ruixun in 2026 will be implemented within a quota range with a total amount expected to not exceed 75 million yuan, and related sales will be implemented within a quota range with a total amount expected to not exceed 55 million yuan.
According to the "Shenzhen Stock Exchange Stock Listing Rules" and the "Articles of Association" and other relevant regulations, this proposal does not need to be submitted to the shareholders' meeting for review.
The specific situation is as follows:
(1) Types and amounts of daily related transactions expected to increase
Unit: RMB 10,000
Note: The above estimated amounts do not include tax.
2. Introduction to related parties and related relationships
(1) Basic information on related parties
Name: Shaanxi Ruixun Electronic Information Technology Co., Ltd.
Unified social credit code: 91610000661171261B
Type: Limited liability company (natural person investment or holding)
Residence: 11th Floor, Building A, Xi'an National Digital Publishing Base, No. 996, Tiangu 7th Road, Software New City, High-tech Zone, Xi'an City, Shaanxi Province
Legal representative: Wang Shaofeng
Registered capital: RMB 15,428,571
Date of establishment: May 14, 2007
Business scope: development, production and sales of intelligent instruments, intelligent equipment and Internet of Things products; development, production and sales of embedded computer software and hardware; design and construction of network engineering, intelligent building engineering, water conservancy and hydropower engineering, and industrial automation engineering; communication equipment installation engineering and technical services; computers and peripheral equipment, electronic components, communication equipment, electronics Sales of equipment, office supplies, and network equipment, and technical consulting services; business information consulting (excluding financial, securities, futures, and fund investment consulting); research and development of independent lending equipment software and hardware; book sales; book rental services; e-commerce technology development; advertising design, production, agency, and release; sales of prepackaged foods, daily necessities, and household items. (Projects that require approval according to law can only carry out business activities after approval by relevant departments)
As of September 30, 2025, the total assets were 46,307,299.12 yuan, and the net assets were -9,074,093.7 yuan; the operating income from January to September 2025 was 45,468,275.68 yuan, and the net profit was -3,233,468.97 yuan.
(2) Related relationships with listed companies
(3) Analysis of contract performance capabilities
The above-mentioned related parties continue to operate in accordance with the law, have good production and operation conditions and financial status, are not dishonest persons subject to enforcement, and have good performance capabilities.
3. Main contents of related-party transactions
Related transactions between the company and its holding company and the above-mentioned related parties include the procurement of raw materials, product sales, R&D, design and manufacturing services required for daily operations. The transactions will follow fair pricing principles, negotiate pricing based on market prices, and conduct transactions and settlements in accordance with the methods agreed in the agreement.
4. Purpose of related transactions and impact on the company
This increase in the daily related transaction quota is because the purchase and sales prices of some products have increased significantly compared with the originally expected prices. The originally expected related transaction quota cannot satisfy the daily operating transactions of the company, its holding subsidiaries and related parties. The above-mentioned related-party transactions belong to the normal business scope of the production and operation activities of the company, its holding companies and related parties. They can make full use of the resources owned by all parties, achieve reasonable allocation of resources and win-win cooperation, and promote the sustainable and stable development of the company and its holding companies. At the same time, all related transactions are based on market prices, follow the principle of fairness and reasonableness, and are in the overall interests of the company and all shareholders. There will be no damage to the rights and interests of the company and small and medium-sized shareholders, and will not affect the independence of the company and its holding company. The main business of the company and its holding company will not be dependent on related parties due to related transactions.
5. Documents available for inspection
1. Resolution of the 15th meeting of the company’s third board of directors;
2. Resolution of the first special meeting of the company’s independent directors in 2026.
Announcement is hereby made.
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Board of Directors
February 13, 2026
Securities code: 003019 Securities abbreviation: Chenzhan Optoelectronics Announcement No.: 2026-007
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
About convening the first extraordinary shareholders' meeting in 2026
notification
The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete, and contains no false records, misleading statements or major omissions.
1. Basic information on convening a meeting
1. Shareholders’ meeting session: the first extraordinary shareholders’ meeting in 2026
2. Convener of the shareholders’ meeting: Board of Directors
3. The convening and holding of this meeting complied with the relevant provisions of the "Company Law of the People's Republic of China", "Shenzhen Stock Exchange Stock Listing Rules", "Shenzhen Stock Exchange Self-Regulatory Guidelines for Listed Companies No. 1 – Standardized Operation of Main Board Listed Companies" and other laws, administrative regulations, departmental rules, normative documents and the "Articles of Association".
4. Meeting time:
(1) On-site meeting time: 16:00 on March 19, 2026
(2) Online voting time: The specific time for online voting through the Shenzhen Stock Exchange system is 9:15-9:25, 9:30-11:30, 13:00-15:00 on March 19, 2026; the specific time for voting through the Shenzhen Stock Exchange Internet voting system is any time from 9:15 to 15:00 on March 19, 2026.
5. How the meeting will be held: a combination of on-site voting and online voting.
6. Equity registration date for the meeting: March 13, 2026
7. Participants:
(1) All ordinary shareholders of the company registered in the Shenzhen Branch of China Securities Depository and Clearing Co., Ltd. after the market closes in the afternoon of March 13, 2026 (equity registration date) have the right to attend this shareholders’ meeting, and can entrust a proxy to attend the meeting and vote in writing (see Appendix 2 for the “Power of Attorney”). The shareholder’s proxy does not have to be a shareholder of the company.
(2) Company directors and senior managers;
(3) Lawyers hired by the company;
(4) Other persons who should attend the shareholders' meeting according to relevant laws and regulations.
8. Meeting location: Company Conference Room, No. 60, Xinglin South Road, Jimei District, Xiamen City, Fujian Province
2. Matters to be considered at the meeting
1. Coding list of proposals for this shareholders’ meeting
The above proposal has been reviewed and approved at the 15th meeting of the company's third board of directors and agreed to be submitted to the company's first extraordinary shareholders' meeting in 2026 for review. For details of the above proposals, please refer to the relevant announcements disclosed by the company on February 13, 2026 in Securities Times, China Securities Journal, Shanghai Securities News, Securities Daily and cninfo.com (www.cninfo.com.cn): "Announcement on the Resolution of the Fifteenth Meeting of the Third Board of Directors" (Announcement Number: 2026-004), "Announcement on Increasing Capital to Subsidiaries and Building Overseas Intelligent Manufacturing Bases" (Announcement Number: 2026-005).
Special instructions:
1. Proposal 1.00 is an ordinary resolution and should be passed by more than half of the voting rights held by shareholders (including shareholders’ agents) present at the shareholders’ meeting.
2. In accordance with the relevant requirements of the "Rules of Shareholders' Meetings of Listed Companies" and the "Shenzhen Stock Exchange Self-Regulatory Guidelines for Listed Companies No. 1 – Standardized Operations of Main Board Listed Companies", the resolutions reviewed at this meeting will separately count the votes of small and medium investors and make public disclosures in a timely manner. (Small and medium-sized investors refer to shareholders other than directors, senior managers of listed companies and shareholders who individually or collectively hold more than 5% of the shares of listed companies.)
3. Meeting registration and other matters
(1) Registration method: On-site registration, registration by letter or fax
(2) Meeting registration time: March 17, 2026, 09:00-11:30 am, 13:30-17:00 pm
(3) Meeting registration location: Company Conference Room, No. 60, Xinglin South Road, Jimei District, Xiamen City
(4) Registration procedures
1. Registration of legal person shareholders: If the legal representative of a legal person shareholder attends, he must hold a shareholder account card, a copy of the business license with the official seal of the legal person shareholder, a certificate of legal representative and an ID card to complete the registration procedures; if an agent is appointed to attend, he must also hold a power of attorney signed by the legal representative (see attachment 2 for the format) and the agent's ID card.
2. Registration of natural person shareholders: If a natural person shareholder attends, he must hold the shareholder account card, shareholding certificate and personal ID card to register; if he entrusts an agent to attend, he must also hold a power of attorney signed by the natural person shareholder and the agent's ID card.
3. Non-resident shareholders can register by fax, letter or email. Telephone registration is not accepted.
Shareholders please carefully fill in the "Shareholder Registration Form" (Appendix 3) for registration confirmation. Faxes and letters should be delivered to the company before 17:00 on March 17, 2026. Please mark the letter "Shareholders' Meeting" on the letter.
4. Meeting contact information
Contact address: No. 60, Xinglin South Road, Jimei District, Xiamen City (Postal Code: 361022)
Contact person: Zhong Baian, Zhang Yuhua
Email: IR@tes-tec.com
Contact number: 0592-6681616
Fax: 0592-6681056
5. This meeting will last for half a day. Shareholders attending the meeting will be responsible for their own food, accommodation and transportation expenses.
4. Specific operational procedures for participating in online voting
At this shareholders' meeting, the company will provide shareholders with an online platform. Shareholders can participate in voting through the Shenzhen Stock Exchange trading system and the Internet voting system (http://wltp.cninfo.com.cn). The specific operating procedures for online voting are shown in Appendix 1.
5. Documents available for inspection
1. Resolution of the 15th meeting of the company’s third board of directors.
Announcement is hereby made.
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Board of Directors
February 13, 2026
Attachment 1:
Specific procedures for participating in online voting
1. Online voting procedures
1． The voting code and voting abbreviation of ordinary shares: the voting code is “363019” and the voting abbreviation is “Chen Zhan Voting”.
2. Fill in the voting opinions or the number of electoral votes.
For non-cumulative voting proposals, fill in the voting opinions: agree, oppose, abstain.
3． Shareholders voting on the general proposal are deemed to express the same opinions on all other proposals except cumulative voting proposals.
When shareholders vote repeatedly on the general proposal and specific proposals, the first valid vote shall prevail. If shareholders vote on specific proposals first and then vote on the general proposal, the voting opinions on the specific proposals that have been voted on shall prevail, and for other unvoted proposals, the voting opinions on the general proposal shall prevail. If shareholders vote on the general proposal first and then vote on the specific proposals, the voting opinions on the general proposal shall prevail.
2. Voting procedures through the Shenzhen Stock Exchange trading system
1． Voting time: Trading hours on March 19, 2026, namely 9:15-9:25, 9:30-11:30 and 13:00-15:00.
2. Shareholders can log in to the securities company's trading client to vote through the trading system.
3. Voting procedures through the Shenzhen Stock Exchange’s Internet voting system
1． The voting time of the Internet voting system is March 19, 2026, from 9:15 to 15:00.
2. Shareholders who vote online through the Internet voting system must go through identity authentication in accordance with the "Implementation Rules for Online Voting of Shareholders Meetings of Listed Companies of Shenzhen Stock Exchange" and "Operation Instructions for Shareholder Identity Authentication of Internet Voting Business of Shenzhen Stock Exchange" and obtain a "Shenzhen Stock Exchange Digital Certificate" or "Shenzhen Stock Exchange Investor Service Password." The specific identity authentication process can be found in the Rules and Guidelines column of the Internet voting system https://wltp.cninfo.com.cn.
3． Based on the service password or digital certificate obtained, shareholders can log in to https://wltp.cninfo.com.cn to vote through the Shenzhen Stock Exchange’s Internet voting system within the specified time.
Attachment 2:
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Power of Attorney for the First Extraordinary Meeting of Shareholders in 2026
I hereby authorize Mr./Ms. to represent the unit/I to attend the first extraordinary shareholders meeting of 2026 held by Chenzhan Optoelectronics (Xiamen) Co., Ltd. on March 19, 2026 (Thursday), and to vote on the following proposals on behalf of the unit/I in accordance with the following instructions and sign the relevant documents of this shareholders' meeting. The principal’s voting instructions for the trustee are as follows:
Opinion form for voting on proposals at this shareholders’ meeting
Note: 1. The above proposals are non-cumulative voting proposals. The principal’s instructions to the trustee shall be based on ticking “√” in the corresponding columns of “Agree”, “Objection” and “Abstain”. There shall not be two or more instructions for the same deliberation matter.
2. The validity period of the power of attorney is from the date when the power of attorney is signed to the end of this meeting.
3. If a legal person shareholder is represented by a proxy entrusted by the legal representative to attend the meeting, the power of attorney shall be signed by the legal representative and stamped with the seal of the legal person shareholder.
Client/unit (signature and seal):
Client’s identity document number/unit business license number:
Client contact information:
Client/unit stock account number:
Number of shares held by the client/unit:
Trustee (signature):
Trustee ID number:
Commission date:
Attachment 3:
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Registration form for the first extraordinary shareholders’ meeting in 2026
Note:
1. Please fill in the above information in block letters (must be the same as what is stated in the shareholder register).
2. Please fill in the number of shares held as of the equity registration date.
3. The completed and signed shareholder registration form should be delivered to the company before 17:00 on March 17, 2026, by fax (0592-6681056), letter or email (IR@tes-tec.com). Telephone registration is not accepted.
4. Newspaper clippings, copies of the above-mentioned shareholder registration forms or self-made ones in the above format are all valid.
Signature (seal) of shareholder: ____________________________
Date: year month day
Securities code: 003019 Securities abbreviation: Chenzhan Optoelectronics Announcement No.: 2026-004
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Resolution of the 15th meeting of the third board of directors
announcement
The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete, and that there are no false records, misleading statements or major omissions.
1. Convening of board of directors meetings
The notice of the 15th meeting of the third board of directors of Chenzhan Optoelectronics (Xiamen) Co., Ltd. (hereinafter referred to as the "Company") was sent by email on February 6, 2026. The meeting was held on February 11, 2026 in the company's conference room via video on site. 8 directors should be present at this meeting, but 8 directors were actually present. The meeting was convened and chaired by Chairman Cai Zongliang, and the company's senior executives attended the meeting.
The convening and holding procedures of this meeting are in compliance with the relevant provisions of the Company Law of the People's Republic of China and the Articles of Association of Chenzhan Optoelectronics (Xiamen) Co., Ltd. (hereinafter referred to as the "Articles of Association") and other laws, regulations and rules.
2. Review status of board of directors meeting
After careful deliberation by all directors, the following proposals were adopted:
(1) The "Proposal on Increasing Capital to Subsidiaries and Building Overseas Intelligent Manufacturing Bases" was reviewed and approved
In order to implement the company's "globalization strategy" plan, continuously improve the global business layout, and reduce the impact of the increasingly complex international trade pattern on the company's business development, the company plans to first increase capital to the company's wholly-owned subsidiary TES Technology (Hong Kong) Limited (hereinafter referred to as "Hong Kong Chenzhan") with 650 million yuan (or equivalent foreign currency) of its own funds or funds raised in other ways. After the capital increase is completed, the equivalent amount will be transferred to TES Technology (Thailand) Co., Ltd. through Hong Kong Chenzhan. Ltd. (hereinafter referred to as "Thailand Chenzhan") will increase capital. The capital increase will be used by Thailand Chenzhan to build an overseas intelligent manufacturing base. At the same time, the company's operating management will be authorized to handle all relevant matters involved in this foreign investment, including but not limited to the operating management's ability to adopt flexible ways to adjust and respond according to the international economic and trade situation and changes in Thai policies.
This proposal has been reviewed and approved at the third meeting of the Strategy Committee of the third board of directors of the company.
For details, please refer to the "Announcement on Increasing Capital to Subsidiaries and Building Overseas Intelligent Manufacturing Bases" (announcement number: 2026-005) disclosed by the company on the same day in the designated information disclosure media "Securities Times", "China Securities News", "Shanghai Securities News", "Securities Daily" and cninfo.com (www.cninfo.com.cn).
Voting results: 8 votes in favor, 0 votes against, and 0 abstentions.
This proposal still needs to be submitted to the company's first extraordinary shareholders' meeting in 2026 for review.
(2) The "Proposal on Increasing the Estimated Daily Amount of Related Transactions in 2026" was reviewed and approved
Based on daily production and operation needs, the company and its subsidiaries expect to increase the daily related purchase amount to the related party Shaanxi Ruixun Electronic Information Technology Co., Ltd. (hereinafter referred to as "Shaanxi Ruixun") by 30 million yuan and the new daily related sales amount by 25 million yuan in 2026. After the addition, daily related purchases from Shaanxi Ruixun in 2026 will be implemented within a quota range with a total amount expected to not exceed 75 million yuan, and related sales will be implemented within a quota range with a total amount expected to not exceed 55 million yuan.
This proposal has been reviewed and approved by the company’s first special meeting of independent directors in 2026.
For details, please refer to the "Announcement on Increasing the Estimated Daily Amount of Related Transactions in 2026" (Announcement No.: 2026-006) disclosed by the company on the same day in the designated information disclosure media "Securities Times", "China Securities News", "Shanghai Securities News", "Securities Daily" and cninfo.com (www.cninfo.com.cn).
Voting results: 8 votes in favor, 0 votes against, and 0 abstentions.
(3) The "Proposal on Convening the Company's First Extraordinary Shareholders' Meeting in 2026" was reviewed and approved
The company is scheduled to hold the first extraordinary shareholders meeting in 2026 at 16:00 on March 19, 2026 (Thursday) in the company conference room at No. 60, Xinglin South Road, Jimei District, Xiamen City.
For details, please refer to the "Notice on Convening the First Extraordinary Shareholders Meeting in 2026" (announcement number: 2026-007) disclosed by the company on the same day in the designated information disclosure media "Securities Times", "China Securities News", "Shanghai Securities News", "Securities Daily" and cninfo.com (www.cninfo.com.cn).
Voting results: 8 votes in favor, 0 votes against, and 0 abstentions.
3. Documents available for inspection
1. Resolution of the 15th meeting of the company’s third board of directors;
2. Resolution of the first special meeting of the company’s independent directors in 2026;
3. Resolution of the third meeting of the Strategy Committee of the third board of directors of the company.
Announcement is hereby made.
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Board of Directors
February 13, 2026
Securities code: 003019 Securities abbreviation: Chenzhan Optoelectronics Announcement No.: 2026-005
Chenzhan Optoelectronics (Xiamen) Co., Ltd.
Regarding increasing capital in subsidiaries and building overseas intelligence
Manufacturing base announcement
The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete, and that there are no false records, misleading statements or major omissions.
Special tips:
1. Chenzhan Optoelectronics (Xiamen) Co., Ltd. (hereinafter referred to as the "Company" or "Chenzhan Optoelectronics") plans to increase capital to the company's wholly-owned subsidiary TES Technology (Hong Kong) Limited (hereinafter referred to as "Hong Kong Chenzhan") with RMB 650 million (or the equivalent in foreign currency) from its own funds or funds raised in other ways. After the capital increase is completed, the equivalent amount will be transferred to TES Technology (Thailand) Co., Ltd. through Hong Kong Chenzhan. Ltd. (hereinafter referred to as "Thailand Chenzhan") will increase capital for the construction of overseas intelligent manufacturing base projects (hereinafter referred to as "this foreign investment project"). The total investment involved is the planned investment scale, which may be adjusted based on specific circumstances such as subsequent fund raising, project progress, filing and approval, etc. There is a risk that the actual investment amount will differ from the investment plan.
2. The main implementation entity of this external investment project is Thailand Chenzhan. The company requested the shareholders meeting to authorize the chairman of the company to increase capital in Thailand Chenzhan within the scope of the total investment in a timely manner and determine the amount of capital increase.
3. During the specific implementation process of this external investment project, there may be unpredictable risks such as changes in the market environment and adjustments to industrial policies. The impact on the company's future annual operating performance will be determined based on the progress and implementation of the specific project. It will not have a significant impact on the company's current operating performance.
4. This external investment project still needs to be submitted to the company’s shareholders’ meeting for review. This external investment involves capital outbound matters, which still needs approval from the relevant local authorities in China and Thailand. There is a certain degree of uncertainty in the approval results.
5. The final financial data of Hong Kong Chenzhan and Thailand Chenzhan shall be subject to the audit report issued by the accounting firm. The company will disclose it after the audit report is issued and before the relevant shareholders' meeting is held.
1. Overview of this foreign investment project
In order to implement the company's "globalization strategy" plan, continuously improve the global business layout, and reduce the impact of the increasingly complex international trade pattern on the company's business development, the company held the 15th meeting of the third board of directors on February 11, 2026, and reviewed and approved the "Proposal on Increasing Capital to Subsidiaries and Building Overseas Intelligent Manufacturing Bases", and agreed that the company would first raise RMB 650 million (or the equivalent in foreign currency) with its own funds or other means. The capital increase will be made to the company's wholly-owned subsidiary Hong Kong Chenzhan. After the capital increase is completed, the capital will be increased by an equivalent amount to Thailand Chenzhan through Hong Kong Chenzhan. The capital increase will be used for Thailand Chenzhan to build an overseas intelligent manufacturing base. At the same time, the company's operating management will be authorized to handle all relevant matters involved in this foreign investment, including but not limited to the operating management can adopt flexible ways to adjust and respond according to the international economic and trade situation and changes in Thai policies.
As of now, the company’s cumulative external investment amount within twelve consecutive months is US$24 million (for details, please refer to the company’s announcement on July 24, 2025 in the designated information disclosure media "Securities Times", "China Securities News", "Shanghai Securities News", "Securities Daily" and Juchao Information Network (www.cnin fo.com.cn) disclosed the "Announcement on Increasing the Capital Increase Amount to Subsidiaries" (Announcement No.: 2025-049)). According to the "Shenzhen Stock Exchange Stock Listing Rules", "Articles of Association" and other relevant regulations, this external investment matter still needs to be submitted to the shareholders' meeting for review and approval.
This external investment does not constitute a related transaction, nor does it constitute a major asset restructuring stipulated in the "Administrative Measures for Major Asset Restructuring of Listed Companies".
2. Basic situation of this foreign investment project
(1) Basic situation of the project
1. Project content: The company plans to build an overseas intelligent manufacturing base in Thailand through its wholly-owned subsidiary Thailand Chenzhan to increase the company's overseas production capacity. The project content includes but is not limited to construction investment, equipment investment, etc.
2. Investment scale: It is planned to use RMB 650 million (or equivalent foreign currency) for the construction of this overseas intelligent manufacturing base project.
3. Project location: WHA Rayong Industrial Park, Rayong Province, Thailand
