HMW Plastic Reinforced Steel Bridge mainly divide into composite plastic bridge and plastic reinforced steel bridge. It is a kind of new and advanced bridge material series product. It already has been widely used in chemical industry, petroleum, electric power, medicine, construction and other industries and coastal areas. It can replace current traditional cable tray, and has been widely used in developed countries in EU and USA. It is the preferred cable tray for future engineering application. It conforms to the national policy of "replacing steel with plastic", and has the characteristics: flflame retardant, corrosion resistance, excellent mechanical strength, good insulation performance, suitable structure, beautiful appearance and long service life. It integrates steel bridge, glass fifiber reinforced plastic bridge and aluminum alloy bridge in difffferent conditions and climatic conditions,then researched and developed.