黄色一级一片少妇高潮,欧美一级黄色wwwwwwwwww,欧美黄黄色一级片播放

“雙豐”品牌功能性棚膜

“Shuangfeng” Brand Functional Covering film

耐老化膜（冷棚膜）：該膜以優質進口聚乙烯為主要原料，添加相關耐老化助劑，采用獨特的配方和工藝，由當今世界最頂級的先進設備——意大利Bandera三層共擠復合吹塑料薄膜生產線加工成型，所有機械力學性能指標均優于國家標準。

Anti-aging film (cold covering film): the main raw material of this film is high-quality imported polyethylene. After adding related anti-aging auxiliaries and applying unique formulas and technology, the material will be processed and shaped by the world’s most leading and advanced equipment—Italian three-layer co-extrusion lamination blown film production line. All mechanical performance is better than that stipulated in the national standards. 

根據不同厚度及用途，連續使用壽命可達1~3年及3年以上。

Based on different thicknesses and usages, the service life of continues use can reach 1 to 3 years and over three years.