1. Materials with low comprehensive mechanical properties - General plastic PE PP EEA EVA PVC

2. materials with moderate comprehensive mechanical properties - General engineering plastic PS HIPS ABS AAS ACS MBS AS BS PMMA

3. materials with high comprehensive mechanical properties - structural engineering plastics PA POM NORYL PC PET PBT

4 High temperature resistant engineering plastics PPO PPS PSF polyarylester

5 Plastic alloy PC-ABS PC-PBT PC-PMMA

6 Thermoplastic elastomers TPR TPU TPE

7 Glass fiber filling material

This classification method focuses on the field of use of materials, indicating what purpose a certain material is suitable for; In fact, there is no strict distinction between ordinary plastics and engineering plastics, only that they are used more or less for engineering purposes. As long as they meet the requirements of mechanical structures, general engineering plastics can also be used for structural purposes. This classification only indicates that a certain material is used more or less for structural purposes.