... is die-casted by 306 stainless steel with light structure Material and features:1, Light appliance’s shell is die-casted by ... the corrosion of strong acid, strongalkali, salt, ammonia, chlorine, and have function of water-proof, dust-proof,anticorrosion grade WF2 ... . the seals adopt siliconrubber, which can withstand oil, acid, high temperature.4, Installment methods are versatile, the lamp cover is ...