Specific test items are as follows: plastic mechanical properties testing the tensile strength / elongation / modulus, flexural strength / flexural modulus, impact test Shore A hardness testing Shore D hardness testing falling weight impact test to detect the proportion of the physical properties of plastic materials filler content the moisture content of the test thermoelectric properties of the surface resistance of plastic pyrolysis temperature (TGA) melting and crystallization temperature (DSC) melt index test the kinematic viscosity of the oil oil oil test mechanical impurities oil acid value oil emulsified oil anti-moisture content assessment process plastic body mechanics test