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压膜线对温室外部薄膜起来压缝及密封的作用，同时也防止大风对塑料膜的损害 。

Film line on the outside greenhouse film up seam and sealing effect, but also to prevent wind damage to the plastic film.

压膜线具有拉力大,柔软光滑（不伤棚膜），无腐蚀，抗老化，耐酸碱，重量轻，易回收，使用寿命长等特点。

Film line with large tension, soft and smooth (not to hurt the film), no corrosion, anti-aging, acid and alkali resistance, light weight, easy recovery, long service life etc..