First-class processing equipment, advanced process, can produce nominal working pressure of 8-35Mpa, engineering volume 0.4-120 liters of large, medium and small specifications of high-pressure seamless gas cylinders, our seamless steel gas cylinder is safe and reliable, with clear steel seal, consistent height and beautiful appearance. Honored as " famous brand" product and "China recognized brand name" product. With GB5099, ISO9809,DOT standards, our cylinders are exported to more than 40 countries and regions. We also support SGS, TUV test.