After two kinds of flame retardant TCEP and DMMP complex with different proportions, better than a single flame retardant, when TCEP: DMMP = 1: 2 (mass ratio), to meet the oxygen index of the foam in the same time, other physical performance is also good. Adjusting the isocyanate index of 3 polyurethane board processing price, plus trimerization catalyst, the obtained flame retardant polyurethane foam of oxygen index of 32 hard polyurethane materials, to GB 8624-1997 "burning of construction materials classification method of performance" under The BI stage (flame retardant grade). Apply a wide range of professional suitability stronger polyurethane board manufacturer for any type of shaker machine and the amount of machine production. Polyurethane sieve used in professional hydropower, building materials and other metal selected mining. Screening within 0.1mm-170mm range of various materials, whether dry sieving, wet sieving have the least impact on screening efficiency. Dehydration within a range of 0.5m-3mm, sculping screen, more fully show the advantages of polyurethane screen surface. Product water resistant, corrosion-resistant, anti-aging, replacement and easy maintenance. Polyurethane density, light weight metal screen surface, can reduce production consumption, so they can adapt to the requirements of large-scale development of the screening machine. Polyurethane insulation panels | Qinghua plastic (certified) | polyurethane panels provided by Tsinghua Engineering Plastics Co. ShangYinXian. ShangYinXian Qinghua Plastics Co., Ltd. (www.tyxqhgc.com) is Anyang, other leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Tsinghua engineering leadership with the staff warmly welcome all inquiries negotiations to create a better future Tsinghua engineering.