Adopting imported improver,and with ultraviolet-radiation-proofAbsorbent,plastic doors and windows remain the same color and unbrickled without aging under burming sun,heavy rain,dryness and wetness from 30 to 70.

• 采用进口改性剂，原料中添加防紫外线吸收剂，在-30-70度之间烈日、暴雨、干燥、潮湿之变化中不变色、不老化、不脆化。