As one of the leading transformer oil purification manufactures in China, Chongqing Assen Power Equipment integrated design, development, production and sales. Relying on High-tech development and continuously providing users with satisfactory and high-quality products are our core ideas. Our company has independently innovated a number of proprietary technologies and passed the ISO 9001 quality management certification. It has formed a set of strict product technology development, mass manufacturing, quality control, and market planning management systems.