Applicable range: suitable for Class IIA, IIB, IIC explosive gas environment; suitable for combustible dust environment in 20,21 and 22 zones; It is suitable for explosive hazardous environment such as oil extraction, storage, chemical industry, medicine, military industry and military facilities. High-voltage electrostatic spraying on the surface of aluminum alloy products and galvanizing on the surface of cast steel products; various types of combination to meet the needs of various wiring on site; stainless steel exposed fasteners. Technical parameters, implementation standard: GB 3836.1, GB 3836.3, IEC 60079 rating marks: Exeii Protection Grade: IP55 anti-corrosion grade: WF1 product advantages 1, this product is increased safety structure; 2, the shell is cast aluminum alloy, adopt advanced high-temperature one-time die-casting molding technology, the surface is smooth, the appearance is exquisite and beautiful. High density metal structure, no air bubbles, no sand holes, good impact resistance (up to 7J) , the shell explosion-proof performance is good, the permanent explosion-proof sign directly pressed on it; 3, the product shell first high-speed shot blasting cleaning, then using high-voltage electrostatic spray process, plastic powder strong adhesion, with good corrosion, anti-oxidation, anti-static, anti-sunshine and other properties. 4, the body and the cover of the combination of rubber seal, sealing, the waterproof performance is extremely strong; 5, the structure form is diverse, the customer may choose according to need; this product material is the cast steel material, the customer may carry on the choice according to the request