rotomolding water tank features:LLDPE,Using imported PE material.Healthy and firmly,anti-corrosion,anti-shock.ISO9001:2000. rotomolding water tankfeatures:Using imported PE material,rolling once molding .Healthy and firmly,anti-corrosion,anti-shock,impact-resistant,UV-proof,anti-aging ,easy to clean and other characters.It also improve production . ISO9001:2000. rotomolding water tank