According to the brand website, Veidemyuller Group was founded in 1948, and it is a leading manufacturer in the field of electrical connection technology products in the world. Veidemyuller belongs to other industrial brands at the mass level. The main products are relays; Connector; Junction box; Converter; Switching power supply; Gateway; In-line terminal; Safety relay; Protector; Wire crimping pliers. According to Sina Aiwen Education Network, Phoenix Electric China Company belongs to German Phoenix Electric Group. Belonging to a high-end brand, 1928, Phoenix Electric invented the world's first modular terminal, which is the prototype of a modern terminal and the first invention patent that Phoenix Electric applied for and obtained. Since then, Phoenix Electric has been keen on innovation and devoted to the development of various connection technologies, forming a perfect electrical interface technology system, many of which have become industry application standards.