Suzhou Since Gas System Co., Ltd. are a privateowned company in science and technology industry. Founded 2004,nearby the beautiful Taihu Lake coast, presently we have been thelargest gas manufacturer East China, with an annual productioncapacity of about 700 nitrogen generating units. Our coversan area over 20,000 square ...

  Qingdao HysterPetroleum Equipment Co.,Ltd is a leading manufacturer of ThreadProtectors for OCTG according to   APISpec5CT/5B/5DP.Protectors are threaded by CNC(computerized numerical control)machine with high precision ,can past allthe API required tests, and our experienced techicians team ...

Hejian City Feilong Retop Rock Bit ManufactureCo., Ltd specializes in the designing,manufacturing，marketing and servings high performancediamond bits, tricone bits drilling tools which used inpetroleum industry.  takes" fastestpenetration best performance" as bit designing guideline tomanufacture ...