The conductive series connection piece applied to the battery module of new energy vehicle, also known as new energy soft connection, is made of copper foil and aluminum foil after high-temperature processing and welding. It has strong conductivity and fast heat dissipation. The copper foil and aluminum foil materials supplied by Qingyi meet the national standards and win the favor of copper soft connection manufacturers far and near.

The state grid power distribution project is applicable to copper bars provided by Qingyi, with copper content of 99.96% and conductivity of 99.4%. It is a high standard in the same industry and quality assurance. It is also applicable to large projects, such as substations, power plants, central machine rooms, communication machine rooms, etc

With the rapid development of China's railways, the technology of railway passenger cars has been continuously upgraded and the product platform has been continuously improved. The driving speed of high-speed EMUs has increased from 250 km to 350 km per hour. Although high-speed railway trains generally run on the power grid, they need a standby power supply. It is used to supply low-voltage power to all system components of the whole vehicle. In case of sudden power failure of the power grid, ensure the lighting and air conditioning in the vehicle, and the lifting and lowering of the charging pantograph when the train starts. At this time, the quality requirements of batteries in the standby power supply are very high. Originally, imported cadmium nickel batteries were basically used, but the cost is too high. With the continuous upgrading of the soft connection quality of lithium batteries and accessories in China, it has occupied an advantage in environmental protection performance, technical performance and convenient performance, and has been successfully replaced.

As one of the core materials of power conduction such as high and low voltage switchgear, distribution box and automatic cargo control, copper conductor bar realizes the operation of lighting, distribution and equipment control system. Each distribution cabinet is separately connected with the foundation section steel, and the PE bar in the cabinet is safely connected with the grounding bolt with the soft connection of Qingyi copper bar or braided wire, and the spring washer is added for anti loosening treatment, which has stable performance, safety and reliability.