The variety of gas products in our country is increasing day by day, and the output is increasing day by day. With its huge industrial advantages, the huge market potential and broad development prospectsattracts the attention of the world. Since the beginning of the 21st century, China has a rapidly developing industrial market and increasing demand for products. It has gradually become one of the most active markets in the gas industry in the world. The demand for gas has continued to grow at a high speed, bringing historical significance and development opportunities to the gas industry. More industrial air separation unit including oxygen generating plant, Nitrogen generation plant, argon production plant were produced. The five international industrial gas giants Linde， Praxair Group, Air Liquide, Air Products, Messer, and Japan Dayang Nippon Acid Co., Ltd. have successively invested and established factories in China.

Because of the large application coverage of gas products, in recent years, our country has regarded the production and supply of gas as the same as power and water supply as the infrastructure of the industrial investment environment, as the "lifeblood" of the national economy and listed as the public utility industry. With the rapid development of the national economy, the scope of application of gas products has continued to expand, the consumption continues to increase, new products continue to be launched, purity continues to increase, market demand continues to expand, and the growth rate of output value far exceeds the growth rate of the gross national economy during the same period. Although the total output value of the gas industry does not account for a large proportion of the GDP of the national economy, it is useful for the rapid development of microelectronics, aerospace, bioengineering, new materials, precision metallurgy, environmental science and other high-tech industries in recent years. The important influence is one of the indispensable raw materials for these industries. It is precisely because of the needs and promotion of various emerging industries and modern science and technology that industrial gas products have achieved remarkable development in terms of variety, quality and quantity.

After 2000, with the rapid development of our country's economy, Chinese industrial gas industry has entered a stage of rapid development. The market size has grown rapidly from 74.532 billion in 2012 to 11.99 billion in 2017, with an average annual compound growth rate of 9.99%. With the sustained and stable development of our country's economy, the demand for national industrial gas market will continue to grow. According to forward-looking calculations, the market size of our country's industrial gas industry will further grow to more than 130 billion yuan in 2018.