... Black 750D 450GSM Pet Screening/Insect Screen 1*1 Black750D450GSMSpecifications:1) Composition: PVC (70%), polyester (30%)2) Resistency: warp-way tension ≥2 ... ,000N; weft-way tension ≥1,200N; warp-way elongation ≤16%, weft-way elongation ≤12%3) Threads per ... centimeter in warp and weft: we have some specifications available,such as 6 ...