Quality Assurance

Quality is the domain of our special focus. All parts of our production are subject to a strict control at each phase of the production. All materials are procured only from verified suppliers, who have implemented and maintain certified quality management systems in their plants.

Tolerance Standards of Silicone Rubber Parts(ISO3302:2014)
1.Table1-Tolerances for Moulding
2.Table2-Classes of flash


Tolerance Standards of Plastic Injection Part(SJT10628-1995)


Note:Note:the tolerance values in the table are used for referance hole or non-mactching hole to take positive(+)sign; Used for negative(-)sign of referance axis or non-matching axis and positive (±)sign of half-value of non-matching length.

Tolerance Standards of CNC Machining

1.Limited deviation value of linear dimension (gbt18042000)(mm)
2.Limited deviation of rouding radius and chamfer height(GB/t1804-2000)(mm)
3.Limited deviation value of angular dimension(GB/t1804-2000)(mm)


If there is no requirements about tolerance, our general tolerance standards are below:
For Injection molding products (hard plastic): SJ/T10628-1995 standards, class 3
For Injection molding products (soft plastic): SJ/T10628-1995 standards, class 6
For 3D printing products: SJ/T10628-1995 standards, class 6
For Silicone and rubber products (Compression molding & injection molding ): ISO3302:2014 CLASS 2
For Silicone and rubber products (Extrusion & Die-cutting): ISO3302:2014 CLASS 3
For Foam products: ISO3302:2014 CLASS 4
For CNC machining products: SJ/T10628-1995 standards, class 2

F is the size of the moulding line , generally for the direction and thickness;
C is the fixed size, generally for the width or inside and outside diameter.