The largest user of the valve is the petrochemical industry, power sector, metallurgy departments, chemical industry and city construction department. Petrochemical industry mainly uses the API standard gate valve, globe valve and check valve; electric power department is mainly used for high temperature pressure power station gate valve, globe valve, check valve and a safety valve and a part of water supply and drainage valve butterfly valve, gate valve pressure; the chemical industry used mainly stainless steel gate valve, globe valve, check valve; metallurgical industry using low pressure large diameter butterfly valve, ball valve oxygen stop valve and oxygen; city construction sector mainly uses the low pressure valve, such as city water supply pipeline is mainly used for large-calibred gate, building construction mainly uses the center line butterfly valve, city heating mainly adopts the metal sealing butterfly valve; pipeline mainly adopts the flat gate valve and ball valve; pharmaceutical industry by stainless steel ball valve; food industry used mainly stainless steel ball valve.　　　　　　Due to the change of user demand, product market trend will also change accordingly, at some time in the future the main development trend as follows:　
　　　1.With the development of oil fields to the mainland and the transfer of offshore oil field, and the electric power industry from the following 300000 kilowatts of power to more than 300000 kilowatts of thermal power and hydropower and nuclear power development, valves should also be based on changes in device applications and the corresponding changes in its performance parameters;　

　　　2.Urban systems generally use a large number of low-pressure valve, and to the development of environment-friendly and energy-saving, that is used in the past low iron gate towards environment-friendly plastic sheet valve, balance valve, metal sealed butterfly valve and the center line butterfly valve seal transition, oil, gas pipeline projects to develop in the direction, which in turn requires a lot of flat gate valve and ball valve;　

　　　3.Energy development is the other side of energy, so from the energy conservation perspective, to the development of the steam trap, to the subcritical and supercritical parameters of the high development;　

　　　4.The construction of the power station to large-scale development, so the need to use large diameter and high pressure safety valve and pressure reducing valve, but also need fast open-close valve;　

　　　5.The need for complete sets of works, the supply valve by a single species to multiple varieties and multiple specification development. A project of valves, by a valve manufacturer to provide all of the trend is growing.