Bridge manufacturers: 1. Longxin Electric Bridge is a famous brand in the bridge industry, a famous trademark in Hebei Province, and a high-tech enterprise. Loncin Electric's leading product, fiberglass cable tray, has high mechanical strength. It has the rigidity of metal bridge and the toughness of fiberglass tray. It has good corrosion resistance, strong aging resistance, beautiful appearance, easy installation and long service life. 2. Daquan Bridge Daquan Group is a large national enterprise group engaged in high and low voltage complete sets of electrical appliances, intelligent components, rail transit equipment, new energy and other industries. The transportation technology industry covers all major products of high-speed railway traction power supply systems, becoming the first-class domestic high-speed railway power equipment manufacturer.