7. Specializing in the production of various high and medium pressure cylinder valves, pipeline valves, cryogenic storage tanks, low temperature cut-off valves, cryogenic liquid carburetor, gas pressure reducer, gas automatically switch boxes, concentrated gas installations, gas mixtures, and tempering to prevent devices, gas terminal box, automatic ignition, flame cutting torch, gas cylinder (seamless, welding , acetylene , liquefied petroleum, and natural gas) detection equipment and other products.

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