Dongguan shield manufacturers can not help but know the secret!

Dongguan shielding cover manufacturers often encounter the problem of product yellowing during the production process. In fact, yellowing means that there are yellow blocks on the surface of the product, and some will become dots. The main reason is that the surface of the product is not clean or turbid after cleaning. Water stains cannot be completely dissipated during drying. After high temperature, they will become slightly white fog spots, and severely turn from white to yellow. Some of them are sweat stains on the touch of fingers, which will turn yellow after a long period of time. It is recommended to use a special cleaning agent for the shielding cover, preferably a water washing method, which can more thoroughly remove the dirt on the surface, and the cost is relatively low. Did it help you? If you want to know more, just add panda's WeChat to know it