The Institute of Plumbing & Heating Engineering – HK Council
H.K. & KLN. Electric Trade Association
Hong Kong Electrical Appliances Manufacturers Association Ltd.
Association of Electrical Contractors
Hong Kong Plumbing and Sanitary Ware Trade Association Ltd.
H.K. & Kowloon Electrical Engineering & Appliances Trade Workers Union
Hong Kong Plumbing General Union
The Hong Kong Federation of Electrical and Mechanical Contractors Limited
