The copper-clad aluminum bus bar (hereunder referred to as "TML Bus-bar") used for the electric purpose is a kind of hi-tech energy-saving product with an aluminum core cladded with a layer of copper on its upper-surface and under-surface respectively so as to gain a metallurgical bond on the interface between the copper cladding and the aluminum core, which is a perfect conductor of electricity that integrates the aluminum's high-quality electric conductive performance and low-cost energy resource with the copper's highly chemical stability and low contact resistance. The TML Bus-bar not only possesses the excellences of copper like high electric conductivity, low contact resistance, etc., but also owns the advantages such as low specific gravity, light weight, and cheapness, which therefore represents an excellent substitute for copper bus bar with an operating reliability and comprehensive electrical/mechanical performance not inferior to those of copper.

Nowadays, copper-clad aluminum bus bars have been widely applied in some industrially advanced countries such as U.S.A., U.K., Japan, etc., where corresponding standards and codes have even been established. To cater for the demands by domestic markets and the international development trend in this field, the product has passed through the inspection conducted by relevant China's national authorized test center and the test results are all acceptable and relevant product standards have been established. The product will be recognized as a preferred product in the market for bus bar trunking system (bus-bar), switchgear assemblies and high/low-voltage electric conductive materials.