Established in 1998, Wenzhou Sundoo Instruments Co., Ltd. designs and manufactures force and torque measurement products with more than 10 years experience. Our products measurement solutions have helped professionals in virtually every industry assess and ensure quality. Company management system passes the latest ISO 9001:2008/GB-T 19001-2008 standard.At present, our products include Analog/Digital/Diagram Force Gauge, Stepper Motor Test Stands, Clamps/Grips, Torque Tester, Full-automatic Spring Tester, Shore Durometer, Thickness Gauge, Torque Wrench, Torque Driver.All products are authorized with CE certificate. In China, we are number one.