We are Xuzhou Hongye Instrumentation Co., Ltd., who specialized in producing industrial regulators. Our products are Single-stage regulators, two-stage regulators, high flow regulators, high pressure regulators for different kinds of gases such as standard gas, O2, H2, N2, and other corrosive gases.Automobile maintenance implements: Tyre gauge, cylinder pressure gauge, and etc. YZJ lubricating oil pressure gauge,