Changzhou Suma always attach great importance on the technology innovation and product quality control.

Stabilize product quality through quality planning, quality control, quality assurance and quality improvement in the quality system .

The implementation of the SPC system has a set of industry standards for the measurement, control and quality improvement of the manufacturing process .

Standardized Process Color Isolation for Defective Products Visual Management

For Shipment, We do 100% test with every-piece of finished products before they departure. Check the Appearance, Dimensions, Hardness, Torque Capacity, Rotation Speed, Marks and Package to ensure every piece arrive you perfectly .

The Introduction of Life Test Platform has greatly improved the stability of product performance .