Baoyi group combine with research design produce sale and serve, with rich technical, advanced process, excellent equipment, prefect examination method and full-scale after service, company professionally produce baoyi industry valves and coordinating equipment which have steady performance, credibility quality, slinky shape. The product that conform to GB, JB, API, ANSI, JIS, BS, DIN, NF, ISO have widely used in oil, chemicals, deposit and transport gas, natural gas and sea oil extraction etc field and sale best in countrywide 23 province, city, municipality and seal in, southeast Asia, Middle East and north American, win user's trust and good review.