Filter Vision Public : Submission of registration statement and draft prospectus to the Office of the SEC for the IPO and listing of KT medical Service Company Limited Company Limited's shares on the Market for Alternative Investment ("mai")

No. SET-2022-0012

22 July 2022

Subject: Submission of registration statement and draft prospectus to the Office of the Securities and Exchange Commission for the initial public offering and listing of KT medical Service Company Limited Company Limited' s shares on the Market for Alternative Investment ("mai")

To: President

The Stock Exchange of Thailand

Filter Vision Public Company Limited ("the Company") disclosed information about a plan for the initial public offering (" IPO" ) and listing of the shares of KT Medical Service Company Limited ("KTMS"), a subsidiary of the company, on the Market for Alternative Investment ("mai") ("IPO") on 28 April 2022.

The Company hereby informs you that on 22 July 2022 KTMS submitted an application for approval to offer its newly-issued shares, together with a registration statement and draft prospectus, to the Office of the Securities and Exchange Commission (" SEC" ). Under this ("IPO") Plan, KTMS expects to offer up to 76,636,600 shares, at the par value of THB 0.50 per share. This newly issued ordinary shares will account for no more than 25.55 percent of paid-up capital of KTMS.

Under plan for listing on the Market for Alternative Investment ("mai"), the company will continue to be the major shareholder of KTMS and KTMS will remain a subsidiary of the company, holding not less than 53.08 percent of the paid-up capital of KTMS after completion of the (" IPO" ). The above details are subject to change as per the Board of Directors, Board of Directors of KTMS and/or persons assigned by the Board of Directors or the Board of Directors of KTMS deem appropriate, including in determining the details. Exact conditions and proportions regarding the planned ("IPO") listing in ("mai") above again.

KTMS expects that the initial plan for the utilization of proceeds from the ("IPO") will be

as follows:

1. To be used as investment project in Hemodialysis Center with dialysis machines.
2. To be used as investment project in renal reagent plants and engineering service centers.
3. To be used as working capital in the business, other investments and expansion of business

The company will provide further details on KTMS' s (" IPO" ) plan at a later time. Investors may review KTMS's Registration Statement and draft prospectus submitted to the ("SEC") at www.sec.or.th

About KTMS

KTMS operates hemodialysis centers and water purification system for hemodialysis as well as full medical sales and services with international quality standards. At present, KTMS has a total of 242 hemodialysis machines, with 19 hemodialysis units covering large parts of the country, including central and Bangkok 3 branches, Northeastern region 9 branches, Northern region 4 branches, Eastern region 1 branch and Western region 2 branches.

Please be informed accordingly.

Yours faithfully,

(Dr. Wijit Techakasem)

Managing Director

Distribution of this document into jurisdictions other than Thailand may be restricted by law. Persons who possess this document should inform themselves of and observe any such restrictions. The information contained herein is not for release, publication, or distribution, directly or indirectly, in or into the United States.

The information contained in this document is for information purposes only and does not constitute an offer to sell, or the information contained in this document is for information purposes only and does not constitute an offer to sell, or the solicitation of an offer to buy any securities, nor shall there be any sale or purchase of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful. The securities referred to in herein have not been and will not be registered under the U.S. Securities Act of 1993, as amended (the "U.S. Securities Act") or the any state securities laws of the United States, and may not be offered or sold within the United States, except in reliance on an exemption from, or in a transaction not subject to, registration under the U.S. Securities Act and applicable state laws. Has no intention to register any portion of the offering or any securities described herein in the United States, or to conduct a public offering of securities in the United States.

Company Secretary

Tel. [phone] ext. 649