Explosion proof camera for industrial hazardous area Founded in 2006, Changzhou Zuoan Electronics Co., Ltd. is a China leading manufacturer of explosion proof CCTV camera security system for industrial aggressive area, such as hazardous areas at coal mining project (I), Marine (with high corrosive salt), offshore, Oil & Gas and industrial locations (IIB and IIC). ZUOAN are the prior manufacturer in China who get the ATEX, IECEx certification for the international market.