Baoji Changyou Petroleum Equipment Co.,ltd

changyou was founded in 2010, specialized in design, manufacturing, surface test and sales of oil drilling equipment, downhole well testing equipment(drill stem test/dst tools,mechanical&pressure control) and exploration equipment. except that, also offer the r&d service to the clients who gets special requirements . covering an area of 3,000 square meters, has about 50 experienced workers and 30 professional technicians. with more than 10 years working experience in designing and manufacturing downhole well testing tools. chanyou has rich design experience, site experience, strong technological innovation and production capabilities. fist tools products include(full bore/opening type dst tools): super safety valve(ssv), slip joint, rd(s) circulating valve, drain valve, circulating valve(single&multi), tester valve(normal&lock/hold open), gauge carrier, jar, sampler, safety joint, packers, absorber(horizontal&vertical) and so on. as a professional equipments manufacturer and produ