... venues.China’s coal industry, CNPC,Sinopec,CNOOC,electric power,metallurgy,railway,steel,ships,military,aerospace,public security fire, ... high pressure sodium lamps and a variety of power of two according to the working environment, lighting characteristics and light intensity ... The introduction of universal thread cable port, can be adapted to Φ8-Φ14 mm diameter cable into different; multiple cables ...