[Hui-yu] professional supply of industrial gases, gas mixtures National Direct Zhengzhou-of-Trade Co., Ltd. mainly produces and sells all types of industrial gases, gas mixtures, electronic gases, high purity gases, liquid gases, medical gases, specialty gases, standard gas and basic chemical raw materials, products widely used in medical areas as health, defense electronics, petrochemical, food and metallurgy, geology and mineral resources, instrumentation, aerospace and scientific research. While also undertaking various gas cylinders, cryogenic vessels, gas equipment and accessories. The company's quality policy "continuous innovation, strengthen advantage; customer-oriented, sincere service" in customer service, we will continue to grow and improve, to provide safer, more quality products and services! I think the national economy to provide excellent technology and products for the purpose of high-tech support, technology and innovation as the basis to guarantee quality service, in good faith with our customers and industry colleagues sincere cooperation and seek common development, create brilliant!