In my pvc thread country's current valve market, in addition to low pressure valves reaching a level acceptable to the international market, high-pressure valves still need to rely on imports. Under the continuous optimistic situation of the macro economy, most of the valve industry's production and sales targets have maintained a relatively rapid increase, but due to prices and influences, industry sales expenditures and profits have dropped significantly compared with the same period last year. With the recovery of the world economy, the import and export of valve products in my country has not been deleted. However, since there is still a big gap between high-end technology and foreign manufacturers, product technology will become a constraint on my country's valve products in the future. A bottleneck in development. The bottleneck of high-pressure valve technology will hinder the development of my country's valves-three fines. Valves are indispensable to all parts of the country’s economy, such as petroleum, chemical industry, electric seat, long-distance pipeline, shipbuilding, nuclear industry, various cryogenic projects, aerospace, and ocean oil extraction. Lack of fluid control facilities.