Special gas (Specialtygases) in various categories, usually between electron gas, standard gas, environmental protection, medical gas welding, gas, air sterilization, widely used in electronics, electric power, petrochemical, mining, iron and steel, non-ferrous metal smelting, heat engineering, biochemistry, environmental monitoring, medical research and diagnosis, the field of food preservation etc..
Special gas emerged in the mid 60's, as the foundation of chemical materials, mainly used in the fields of large scale petrochemical, semiconductor devices, optical fiber, laser, medical science, clinical diagnosis, medical sterilization, fruit ripening, food preservation. With the development of new products and technology, its application is also more and more widely. The strong demand in the rapid development of the national economy and the downstream industries, China special gas industry entered a rapid development stage in 2006, the average annual growth rate of more than 17%. In 2011, the domestic special gas industry output value of scale is 29688000000 yuan, than going up year of growth 22.15%; sales revenue 29752000000 yuan, up 21.64% over the previous year.
At present, the domestic total of specialty gas production more than 150 enterprises, the small scale of production in most enterprises. Multinational enterprises have domestic investment in the establishment of many joint or wholly owned gas company, domestic sales of gas products accounted for about 70% market share. A gas company foreign capital through acquisition, new, dominates the industry. In 2010, German Delin company, Air Liquide, USA Praxair group set up wholly owned and joint ventures with number 32.38% of the enterprises occupy a special domestic gas market 65.90% market and 83.08% of the profits of the market. The essence of competition Chinese gas industry on the international gas industry giants and the national gas industry competition.
