Dong An Marine Safety Equipment Trading Limited was incorporated in Hong Kong on 1 August 1989 under Companies Registry number 0260158, structured as a private company limited by shares. The business is based at the Chu Kong Group shipyard building in Lai Chi Kok, Kowloon, where it occupies first-floor premises adjacent to the shipyard operations of the parent Chu Kong group. The firm concentrates on inspection, testing, sales and repair technical services for marine fire-fighting and life-saving equipment installed on commercial vessels calling at Hong Kong and South China ports. Routine work covers servicing of liferafts and lifeboats, recharging of portable and fixed fire extinguishers, pressure testing of fire hoses and hydrants, refilling and maintenance of breathing apparatus including EEBD and SCBA sets, ultrasonic tightness testing of hatch covers and weathertight closures, along with general watertight integrity verification for hulls and accommodation areas. The Hong Kong Marine Department lists the firm in its shipping directory of approved marine suppliers of safety equipment, and it is also included in the Hong Kong Maritime Hub directory and the Hong Kong Maritime and Port Database maintained by the Transport and Logistics Bureau. Operations are recognised under the China Classification Society scheme for service stations performing periodical LSA and FFE servicing on classed tonnage. Dong An maintains contact through its dongan@yhckgs.com.hk address linked to the Yiu Hing Chu Kong group, and the company remains active on the Hong Kong Companies Registry. (177 words)