E. seal with good weather resistance, and long time not lose viscosity and mechanical strength.

密封带有良好的耐候性，且长时间不失去粘性和机械强度。

youdao

E. seal with good weather resistance, and long time not lose viscosity and mechanical strength.

密封带有良好的耐候性，且长时间不失去粘性和机械强度。

youdao