To ensure the tolerance and other parameters fulfill the requirements of the usage of the product. It always needs to do a lot of relevant measuring and test. Chengda rubber and plastic is equipped with a lot of measuring and test equipment. We can measure and test the product when the first sample of the product come out. If the sizes are not within the tolerance or they can not meet the requirement of the customer, we can modify the mold or the technique of process, so that they can finally meet the requirement.