Hunan Changgao Electric Co., Ltd.

Hunan Changgao Electric Co., Ltd. is a wholly-owned subsidiary of Hunan Changgao Electric New Technology Co., Ltd. (stock code: 002452), located in Jinzhou High-voltage Electrical Appliance Industrial Park, Ningxiang, Changsha. The park has a total investment of 320 million yuan, covers an area of 600 mu, and has a total construction area of 120,000 square meters. The company has passed ISO9001:2008 quality system certification, with a registered capital of 200 million yuan. In 2016, it obtained the Hunan Province High-tech Enterprise Certificate, and in 2019, it obtained the Hunan Province High-tech Enterprise Certificate again. It is a qualified supplier for centralized large-scale bidding of State Grid and China Southern Power Grid. The company consistently adheres to the principle of "quality first, customer supreme", and takes the research and development of long-term reliable power transmission and transformation products as its goal. It has so far 29 independent research and innovation products, 6 invention patents, and 23 utility model patents. It is dedicated to providing high-quality and reliable products to customers. The company has been rated as a National High-tech Enterprise, a Changsha Intelligent Manufacturing Demonstration Enterprise, a second prize winner of the Hunan Provincial Electric Power Science and Technology Award in 2019 and 2021, a Hunan Province Specialized, Refined, Distinctive and Innovative Little Giant Enterprise, a 3A Credit Enterprise, a Level 3 Work Safety Standardization Enterprise, an Advanced Unit of Key Projects in Changsha, and one of the Top Ten Fast-growing Industrial Enterprises in Ningxiang. It has passed the national quality management system, occupational health and environmental management system certifications. The company's products are under its own brand, mainly engaged in 35-220KV high-voltage and ultra-high-voltage combined electrical products for power grid equipment. The main products include ZF□-252 gas-insulated metal-enclosed switchgear, ZF29-126 gas-insulated metal-enclosed intelligent switchgear, 126KV composite combined electrical apparatus, 40.5kV composite combined electrical apparatus, LW46-126 self-energy SF6 circuit breaker, LW46-72.5 self-energy high-voltage circuit breaker, LW46-252 SF6 circuit breaker, LW42-40.5 SF6 circuit breaker, ZW30-40.5 high-voltage AC circuit breaker, LW□-252/T4000-50 tank-type high-voltage SF6 circuit breaker, etc. Based on the characteristics of its products, the company's production plants all use central air conditioning for temperature and humidity control, and the key product assembly area has Class 100,000 purification treatment. The entire plant meets the requirements of cleanliness, constant temperature, constant humidity, shielding, anti-interference, pollution prevention, and waste discharge, ensuring the production environment and conditions for high-voltage switch products.