Environmental management system certigicate

Quality management system certificate

Test report of XHS-type Dampening Spring Vibration Isolator issued by Metallurgy Industry Ministry General Architectural Research Institute Engineering Structure Testing Laboratory3

Test report of XHS-type Dampening Spring Vibration Isolator issued by Metallurgy Industry Ministry General Architectural Research Institute Engineering Structure Testing Laboratory2

Test report of XHS-type Dampening Spring Vibration Isolator issued by Metallurgy Industry Ministry General Architectural Research Institute Engineering Structure Testing Laboratory1

Test report of ZT-type Dampening Spring Vibration Isolator issued by Metallurgy Industry Ministry General Architectural Research Institute Engineering Structure Testing Laboratory5