Founded in 1969, COSEL is the world's leading power supply manufacturer, producing high-quality, ultra-small AC-DC power supplies, AC-DC converters with advanced technology and high efficiency and ease of use. Noise filter. The company is headquartered in Toyama, Japan, and has established sales branches in Germany, Hong Kong and Shanghai. It has strong capital and design R&D team, leading the leading edge power development technology, with first-class production, testing equipment and professional Japanese local manufacturing technology. To create high-standard, high-quality and low-cost full range of industrial-grade power products for customers. Its high reliability, high power density and sophisticated power supply manufacturing technology are typical representatives of Japanese brand power supplies.