1、 Material selection Main material: commonly used PVC waterproof cloth with a single-sided waterproof coating, which can effectively block liquid penetration and ensure hygiene and safety during the transportation of corpses. In addition, there are materials available for selection such as Oxford cloth, Chunya spinning, non-woven fabric, nylon cloth, OPP, PVA, LLDPE, etc. Reinforcement material: Combining PE woven fabric, PEVA and other materials, the overall tear resistance is improved through multi-layer composite technology. Auxiliary materials: High density polyethylene (HDPE) or polypropylene (PP) is used to make reinforcement bands, which are fixed to the handle area through sewing technology to disperse load-bearing pressure and avoid local tearing. 2、 Production process Cutting and Composite: Cut PVC fabric and composite layer materials according to the design dimensions, and composite multiple layers of materials into one through hot pressing technology. Stitching handle and reinforcement belt: Using high-strength sewing thread, the two-piece woven belt and reinforcement belt are sewn onto the designated position of the bag body to ensure that the thread density and strength meet the standards. Installation of bag opening and zipper: The U-shaped zipper is pressed together with the bag opening through a hot pressing mold to form an integrated sealing structure; Install double zipper heads to ensure smooth opening and closing. Edge reinforcement and label bag installation: Perform secondary hot pressing reinforcement on the edge of the bag body, sew the label bag and fix it on the surface of the bag body. Quality inspection: carry out load bearing test (≥ 200kg), waterproof test (simulating rainstorm environment) and tear strength test on the finished products to ensure that the products meet the fire rescue standards. 3、 Appearance and specifications Color: Appearance colors include yellow, black, orange, blue, white, etc. Black is more common. Size: The unfolded size is generally ≥ 190cm in length, ≥ 60cm in width, and ≥ 20cm in thickness. There are also other specifications available, such as 2000 × 470 × 240mm. Weight: Lightweight, generally ≤ 1.5kg, easy to carry and operate.