North source, The manufacturing center located in Tanggu, Tianjin, focused on the manufacturing, development, maintenance and services of petroleum tools and equipments. The main products are premium sand control screen, electric pressure gauge and drawing works. They are sold to major domestic oil and gas fields, and Central Asia, the Middle East, North America and other regions. And our company associated with the first rate energy service companies of the world like Halliburton. Chevron . Committed to the best oil tools and services. Our goal is to be a international class oil field equipments and services supplier.