Our explosion-proof production(gas-proof,mine-proof,dust-proof)has made the explosion-proof certificate of soundness in different units,gas explosion-proof level has been up to IIB&IIC.used for explosion-proof,dust proof,resistant high and low temperature,water-proof ,rot-proof,shock-proof,high magnetic field-proof,lightning strike-proof,now itused in petrochemical,coal,war industry,aviation,voyahg,traffic.