Protective net is mainly used for building construction in real estate, building materials and construction personnel to prevent the fall height, with a construction fence around the building up to avoid injuries and protect workers in high places and pedestrian safety and keep the site clean. We produce fence construction with polyethylene, polypropylene plastic wire; polypropylene, cotton Lun, nylon 6 fibers as raw material. Crochet knitting machines made by vertical network (Li Network), mechanically folded artificial cross-network node and weaving.