Our company has manufacture license for special pressure equipment(B1, B3) issued by AQSIQ. There are two range of products: fire extinguisher and Gas cylinder. The gas cylinder includes CNG1, CNG2, CNG3 cylinder, seamless steel gas cylinders, seamless aluminum gas cylinders, carbon fiber composite cylinder with aluminum liner and so on, Most of the products are DOT, TC, LBCP, TUV, KGS, APRAGAZ certified now.