​China already has the longest high-speed rail service in the world. China's high-speed rail companies have made gains around the world. With the formation of China's large city clusters. The need to move people and goods is growing. Urban congestion, cost, and capacity and cost bottlenecks of long-distance air transportation cannot be broken. With the increasing demand for long-distance high-speed rail and urban rail transit, there will be rapid development in the foreseeable future.

Due to the particularity of the rail transit industry, the safety and reliability of the electric connection are especially strict. First of all, all plastic raw materials used must meet the VO level of UL1059 and pass THE DIN5510 low smoke halogen free test. In addition, compared with other industries, an acceleration impact test was added in connection stability. In the long life test, the vertical acceleration value was required to be 7.9m/s2. The transverse acceleration is 3.5m/s2, and the longitudinal acceleration is 5.5m /s2. After 5H of testing, the appearance and structure of the product are achieved. No cracks, deformation and other mechanical damage. The wire connection reliability does not change.

Tianlichuang from the beginning of the establishment of spring connection technology as the plant. The high reliability of the spring connection is in line with the requirements of the rail transit industry for the connection technology. Now days, the product has a batch of a large number of application in rail transit, locomotive power control cabinet, motorcycle lighting lamps and lanterns interfaces, ballast, locomotive radio system interface, locomotive lightning protection cabinets, signal lightning protection components, induction of integrated bathroom faucet, implement sensing system, hand dryer, the car stops display, electric heater, the application of the platform screen door, gate, etc.