This is the standard for material selection. Because what material you choose depends on your performance requirements. The shrinkage is related to the processing technology. If the performance requirements are not very high, but the molding is only considered, the modified polypropylene can be selected, which is more cost-effective. For example, filled or reinforced polypropylene, etc., we will give you the best solution to match the materials in the use environment of the parts we need.