... chemical, pharmaceutical, military and military facilities, etc. 5, Designed for explosive atmosphere such like Oil extractionrefining, storage, chemical, pharmaceutical, ... stainless steel material of anti drop design, convenient for installing and maintainance.9,Steel pipe wiring or ... Electrical hoist button:Ingress thread specification : G3/4" G1"Suitable for cable’s outer diameter:Φ9mm ~Φ14 mm Φ11 ...