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。
However, his strength lasts still for a long, long time.
那是一种持续绵久的气劲。
High strength of the product, light weight, corrosion resistant, long time using.
制品强度高、重量轻、耐腐蚀，使用寿命长。
High strength of the product, light weight, corrosion resistant, long time using.
制品强度高、重量轻、耐腐蚀，使用寿命长。
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