Qingdao Leader Int'l Trade & Inustry Co.,Ltd which is the sales office of Laizhou Toppower Petroleum Machinery Co.,Ltd and Qingdao Green Chemicals Co.,Ltd. Focusing on producing petroleum machinery, chemicals for oil & gas, oil tools, oil tube, casing tube and coupling for 15 years, most of our products are supplied to Sinopec, CNPC and BP and Shell etc. With strict quality control and approved by ISO 9001, API, GOST, CCIBC, We can supply best quality and professional service.
