01 Technical Services

Product Application Plan Consultation

According to the specific situation of the application industry, analyze the optimization problems of the applied equipment and machines and provide solutions.

Product Application Technical Support

technical support to make protective products play a better role in equipment and machines and solve the problems existing in optimization

Product Customization After-sales Service

The advantages of efficient and excellent customized services, providing customized product development services to customers.

02 Our Advantage

601, 2026

SD-M12 * 1.5-10 vent valve (thread type)

Product Introduction SDA Shangda plastic waterproof and breathable valve is a new type of waterproof and breathable component. It adopts imported polymer expanded polytetrafluoroethylene microporous film e-PTFE through injection molding, hot melt welding [...]

601, 2026

SD-SK5-4.5 vent valve (snap-in)

Product Introduction SDA Shangda plastic waterproof and breathable valve is a new type of waterproof and breathable component. It adopts imported polymer expanded polytetrafluoroethylene microporous film e-PTFE through injection molding, hot melt welding [...]

601, 2026

SD-SK5-4.5-2 Vent Valve (snap-in)

Product Introduction SDA Shangda plastic waterproof and breathable valve is a new type of waterproof and breathable component. It adopts imported polymer expanded polytetrafluoroethylene microporous film e-PTFE through injection molding, hot melt welding [...]