General Announcement::Oiltek International Limited - Effective Date of Transfer of Listing from Catalist to the Mainboard

Issuer & Securities

Announcement Title: General Announcement
Date &Time of Broadcast: 02-Jun-2025 07:46:51
Status: New
Announcement Sub Title: Oiltek International Limited - Effective Date of Transfer of Listing from Catalist to the Mainboard
Announcement Reference: SG250602OTHRIEJ5
Submitted By (Co./ Ind. Name): Tan Swee Gek
Designation: Joint Company Secretary
Description (Please provide a detailed description of the event in the box below): Koh Brothers Eco Engineering Limited (the "Company") refers to the announcement made by its subsidiary, Oiltek International Limited ("Oiltek") on 2 June 2025, in relation to effective date for the transfer of the listing of Oiltek from the Catalist Board of the SGX-ST (the "Catalist") to the Mainboard of the SGX-ST (the "Mainboard"). For more details on the aforesaid announcement released by Oiltek, please refer to SGX's website at www.sgx.com.

This announcement has been reviewed by the Company's sponsor, RHT Capital Pte. Ltd. (the "Sponsor"). It has not been
examined or approved by the Singapore Exchange Securities Trading Limited (the "Exchange") and the Exchange assumes no responsibility for the contents of this document, including the correctness of any of the statements or opinions made or reports contained in this document.

The contact person for the sponsor is Mr. Joseph Au at 36 Robinson Road, #10-06 City House, Singapore 068877, Email:
sponsor@rhtgoc.com.

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