Chit Hing Air Conditioning Company Limited

捷興冷氣工程有限公司

Fortune Champion Air Conditioning Engineering Co.

福冠冷氣工程公司

Kei Tat Air Conditioning Engineering

基達冷氣工程

Joint Success Air-Conditioning Engineering Limited

進昇冷氣工程有限公司

Kin Bong Conditioning Engineering Company

建邦冷氣工程公司

Star Air Conditioning Engineering

恒星冷氣工程