Shandong kerui petroleum technology co.,ltd. have comprehensive and complete qualification system, strictly operating in high level to ensure the quality of product and service.Shandong kerui petroleum technology co.,ltd. have long-term cooperation with our customers, the key point is to improve product and service quality continuously. Depending on complete work process, quality management system, strictly abide by the global standards, Company establish a QA/QC system which comply with global standards, have certificates such as IADC, Qualification of China Overseas Project Contracting, QHSE, Safe Production Licence, etc.