Our company has been certified by ISO9001, API, and GHOST and obtained the certifications of API 4F, 7K, 8A, and 8C. The drilling rigs are produced in compliance with the standard SY/T5609-1999 Drilling Rig Models and Basic Parameters, and main parts (derricks, chassis, winch parts, travelling blocks, hooks, overhead travelling cranes, water taps, turnplates, mud pump parts and other products) cover the API grade.