Silage covering is used in silage protection. It's a five layers polythene film, white on the topside to reduce heat build up in the silage and black on the underside to inhibit light penetraction. It can eliminate fungal growing and harmful secondary fermentation. Specification of Popular silage sheet: Popular thickness: 5mil/127mic; 6mil/150mic. Popular width: 10m; 12m, 15m, 16m, 18m Popular length: 30m; 45m; 60m; 90m; 300m Color: White on topside, black downside Material: 100% virgin premium PE+UV protection Film Layer:Five-layer(5-layers) Co-extrusion Advantage of Plastic Silage sheet: a.The competitive price and alternative size; b.UV protection for more than 15months; c.Eccellent anti puncture, abrasion and tear resistance; d.High tensile strength; e.Reduce labour cost and economical storage system; f. Well packaged for roll protection.