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PVC oxygen mask, as the name suggests, is a product that provides oxygen. Its main function is to ... -
Injection molding is a method of industrial product production modeling. Products usually use rubber... -
Because nylon has many characteristics, it is widely used in automobiles, electronic and electrical ... -
In order to ensure the physical properties and appearance quality of PVC products, the traditional... -
Basic reason: From the perspective of plastics, the occurrence of flash is due to the pressure in th...
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