Haolong manufactures to standards including GB/JB(China), ANSI, DIN, JIS, BS, RUSSIAN and so on, to produce a great variety of valves including gate valves, ball valves, check valves, butterfly valves, plunger valves and other series and a number of specifications.The company has passed ISO9001: 2008, ISO14001:2004 quality and environmental management system certification, security certification,
the "People's Republic of China special equipment manufacturing license", and has set up a number of marketing networks in the country, products cover each city. And has established long-term cooperative relationships with Europe, America, Africa, Central Asia and other countries valve business, the products are exported to overseas.