Used for special labor protection equipment: smoke and gas masks, fire masks, escape masks, gas masks, protective face shields, diving masks, waterproof face shields, fire spherical face shields, fire breathing masks, fire mask face shields, fire transparent face shields, transparent protective face shields, transparent face shields, widely used in petroleum, chemical, mining, metallurgy, military, fire protection, and emergency response

Used for special labor protection equipment: smoke and gas masks, fire masks, escape masks, gas masks, protective face shields, diving masks, waterproof face shields, fire spherical face shields, fire breathing apparatus face shields, fire mask face shields, fire transparent face shields, transparent protective face shields, transparent face shields, widely used in petroleum, chemical, mining, metallurgy, military, fire protection, emergency rescue and disaster relief