Tengtai Lightning Protection Technology originated as the Yueqing Huawei Instrument Transformer Factory. After 30 years of market development and growth, it has evolved into a large, modern private‑sector electrical enterprise integrating manufacturing, research and development, trade, and services. The company oversees three major wholly‑owned subsidiaries—Zhejiang Tengtai Electric Co., Ltd., Huawei Instrument Transformer Factory, and Zhejiang Tengtai Lightning Protection Technology Co., Ltd.—as well as one Sino‑foreign joint venture, along with 58 affiliated enterprises and more than 600 collaborative partners. Its product portfolio encompasses hundreds of items, including surge protectors, high‑ and low‑voltage instrument transformers, zero‑sequence current transformers, reactors, and many others. The company's branded lightning protection products and instrument transformers are supported by hundreds of distributors across all provinces in China, backed by an extensive sales network.