we,Shengli Oil Field Freet Petroleum Equipment co., Ltd, Located in Dongying City, Shandong, owned 11 branches & subsidiary companies, a leading and reliable OCTG & oilfield equipments manufacturer in China, Annual OCTG capacity is around 400,000 tons, Mainly producing API Tubing, Casing, ERW Pipe, Sucker rod, also including Gost Casing, Pump unit, Workover rig, etc. Main clients include Royal Shell, Repsol-YPF, PDO, CNPC, SINOPEC and so on.All the products data and company info, please visit our website: www.slfrt.comAs you know we have long and abundant experience in this filed, producing full range of API and Gost products with high quality, setting up sales network around worldwide. Looking forward to setting up good business relationship with you soon. Welcome to visit our company in future.