About Us
As a leading manufacturer of electrical insulation materials, we combine advanced technology with deep industry expertise to deliver reliable, high-performance solutions for power, electronics, and industrial applications worldwide. Committed to innovation, quality, and customer partnership, we support progress in energy efficiency and electrical safety.

Changzhou City Diying Insulation Materials Co., Ltd

Changzhou City Diying Insulation Materials Co., Ltd. was founded in 2001 and is located in Changzhou City, Jiangsu Province, Yangtze River Delta. It is a company integrating the production and sales of various insulating materials. It is committed to providing high-quality insulating materials and efficient professional services to corporate customers.

The main categories of insulating materials are: insulating lacquer, insulating paper, insulating board, insulating tape, insulating rod, insulating tube, laminated products, rubber and plastic products and other materials. The products have passed UL certification and are widely used in the fields of electronics, electrical appliances, and packaging materials.

Over the years, our company has formulated technical documents such as product technical conditions, process procedures, inspection standards, quality assurance systems, and quality control points in accordance with national standards and ministerial standards. It implements and conducts quality control throughout the entire production process and continuously tracks advanced technologies in the industry. Carry out technical transformation and technical research to improve product quality and make product performance excellent and reliable.

Quality first, honest service

The company has always adhered to the concept of “quality first, honest service”, strictly controlled quality, continuously improved, and continuously improved, and rewarded every customer with high-quality electrical and electrical insulation material products and excellent services. Over the past ten years, taking advantage of the general trend of China’s economic development and the Diying spirit of “professionalism, pragmatism, integrity and innovation”, the company has gradually developed into a professional manufacturer of Class B and Class F series insulation materials. At present, the products sell well to more than 100 manufacturers across the country, and have established long-term and stable business cooperation relationships with users.