Shanghai Daoqin Plastics Co., Ltd.

破 bad types type bad causes long and solution methods property bad mono pure due to outer force large 断口（裂缝）泛白· troubleshooting large outer force property bad types type bad causes long and solution methods chemical force crazing *药 product and force obvious 情况, is 镜面. ·药 product, raw materials more fatigue bad outer force and 反复施 add negative 荷 施 add methods 断口呈现贝 housing/shell 纹. **· resistant fatigue property material use coating product bad outer force and coating film material property 差（ impact, 延伸）· troubleshooting outer force electroplating product bad outer force and electroplating film material property 差（ impact, 延伸）· troubleshooting outer force material property decline （ poor 化） 破 bad outer force and formed product material property decline （ poor 化）├ different types type raw materials mixed 入├ weather resistant （ light ） property poor 化├ hot poor 化└ mold cavity inner hot poor or separation understanding ·消 remove mixed causes · use weather resistance raw materials · use heat resistant property raw materials · using/adopting formed conditions impact resistant property 差 材 material bad outer force and formed product low strong/high degree · use impact resistant property material low temperature conditions lower bad outer force and formed product strong/high degree decline · use impact resistant property material creep bad long 期承受 negative 荷· reduce deformation （ negative 荷）· add large 断面系数· decrease small force