Metis is the most professional supplier in the geotechnical engineering and construction industries.Metis has several advanced SDA bolt production lines and accessories processing equipment, professional research and development group, and entire.SGS is the world’s leading inspection, verification, testing and certification company, which demonstrates that your products, processes, systems or services are compliant with either national or international standards and regulations or customer defined standards through certification. Our company has pass the certification finally in March 9, 2015. It indicates that we has strict quality control system, reliable products and excellent service.