We have a complete quality management system. Products strictly comply with API standards.All the products are completely interchangeable with OEMs.We have an ISO9001 certificate, API Spec 7K certificate, and API Spec 16C certificate.We are committed to the development and manufacturing of petroleum equipment accessories and drilling tools.We have many invention patents and utility model patents.Our products are sold in large quantities to the Americas, the Middle East, and other regions.