Dalian Insulator Group Co., Ltd. is a high-tech enterprise specializing in the R&D, production, and sales of line porcelain insulators, composite insulators, substation porcelain, and electrical appliances. With a century of development, it has accumulated extensive operational experience, offering reliable product performance and a highly reputable brand.
The company's business segmentation falls within the insulator and surge arrester industry of the power equipment sector. Its products are primarily used in transmission lines with the highest national voltage levels, serving insulation and conductor support functions. Alongside other transmission and transformation equipment, they form transmission networks of various voltage levels, ensuring power transmission. The company is one of the few in the industry capable of independently developing, manufacturing, and deploying both ultra-high voltage porcelain and composite insulators in transmission lines.
The company covers an area of 230,000 square meters and is equipped with comprehensive production and testing facilities. A scientifically structured process layout provides a solid foundation for large-scale manufacturing.
In 2022, the company built a new 158,000-square-meter plant, integrating its latest porcelain insulator manufacturing technology and equipment, with an investment exceeding several hundred million yuan.
The company integrates the industrial chain with the innovation chain and drives industrial development through innovation. Relying on its enterprise technology center platform, it was the first in the industry to successfully develop and mass-produce AC/DC 420kN and 550kN products, breaking foreign monopolies in this field. It pioneered domestically the cylindrical head products for mechanized production and new aluminum oxide formulation products, enhancing product performance while leading industry advancements. The company has won the State Council’s Science and Technology Progress Award three times and received multiple mechanical industry technology progress awards. By aligning with China's power grid demands for efficiency improvements, the company continuously refines its products and has supplied nearly 10 million insulators for over 40 ultra-high voltage projects nationwide.
Deeply engaged in the suspension porcelain insulator sector, the company focuses on independent innovation and collaborative R&D. It possesses full-series AC/DC insulator development and production capabilities. In collaboration with Tsinghua University, it has developed composite insulators and, leveraging its cross-disciplinary expertise in porcelain and composite insulators, successfully created hybrid insulators, contributing to insulation replacement in power grids.
