ZJJLZK.ZJJLZK(ZHEJIANG JINLONG) was founded in July 2003 with a registered capital of 200.8 million RMB, specializing in equipment manufacturing for petroleum, chemical, pharmaceutical, electric power and other industries. The company has three major system certifications of ISO9001, ISO14001, ISO45001 and many international qualifications such as EU CE, US API. The main R&D products include bellows valves, multi-well oil and gas metering devices, oilfield wastewater treatment equipment, etc., covering more than 50 kinds of specialized equipment such as flow meters, various types of valves (globe valves, ball valves, etc.), filtration systems (fine filters, cyclone desanders) and intelligent metering devices, which are widely used in the field of energy and environmental protection.