First, the product description: (1) Product name: screen line, the pressure curtain wire, steel wire or lamination line. (2), the main purpose: support / pressure curtain line is widely used in modern agriculture, greenhouse, gardening and other projects, mainly for the greenhouse, outside support / pressure shade covering materials. Curtain line pressure for the greenhouse shade nets pull curtain system, from the pressure screen role; screen line for the greenhouse shade nets, insulation curtain Curtain system, from the care curtain effect. Products can also be used as a hanging wire hanging seedlings and vineyards support line, is an ideal material lead wire and steel wire and other metal products, alternative, but also can be used in aquaculture and reservoirs, etc. Polyester support / pressure curtain line with anti-ultraviolet aging, high strength, low stretch, thermal stability, anti-acid proof, smooth surface, environmental protection and other technical characteristics, the use of longer, more secure. 2-1, a black screen line is mainly used for the greenhouse and outdoor awning pull curtain system, do lamination line purposes. Products are also used in the vineyards of the support line. 2-2, transparent color screen line to pull the curtain system and indoor conservatory awnings, alternative metal structure products do care film line purposes. (3), the technical parameters: black, white, transparent color oval diameter of 1.5-3.5mm, tensile strength (N) ≥2200, elongation at break of 17.5%. 3-1, the tensile properties: tensile elongation polyester screen line is low, can be easily rapidly tensioned and, once tensioned, screen line will maintain this tension state without rebound. 3-2, high strength: Polyester screen line of knot strength black screen line than 950N; transparent color screen line over 710N, and therefore better withstand external weather (such as 8 to 10 winds) bring The devastating effects. 3-3, thermal stability: Polyester screen line at ambient temperature -40 ℃ ~ 70 ℃ cases, the mechanical properties and geometry remains unchanged. 3-4, anti-UV stability: for use in more than 30 months of outdoor testing showed that the transparent color screen line tensile strength decreased less than 3%, black screen line of strength decreased less, which means the screen line under greenhouse conditions (glass, plastic film, etc.) and outdoor conditions very long life.