Constant Black plastic Mulch film; Control weed growth; Earlier ... 12 months. The additive not only extends the use life of the PE Film, save cost and energy ... weather resistance, good light-transmission, and warm-keeping. With use life not less than 20 months. 4) 200 microns ... weed control, pest control, improve water retention, optimize fertilizer use, improve fruit quality. 1. The material: LLDPE, UV ...