yongsheng has provided solutions for industrial flow control worldwide. it has been 20 years of industry development history. its production and development of control valves, ball valves, butterfly valves, self-operated valves, vacuum valves and other products have been widely used the world’s petroleum refining, fine chemicals, coal chemical industry, lng, chemical fiber, electricity, metallurgy, new energy, pipeline transportation, papermaking and other fields, and approved by the majority of users of petrochina, sinopec, cnooc. since its inception, it has won a number of high-quality project awards and has won more than 100 national and provincial awards.