Guangdong Sihui Instrument Transformer Works Co., Ltd. specializes in the professional design, production, and sales of instrument transformers, dry-type power transformers, and other series products. The products are sold nationwide and exported to the European Union, the United States, Russia, and various Southeast Asian countries. Plateau-type instrument transformers have been used in China's Jiuquan Satellite Launch Center, contributing to the successful space missions of Shenzhou 5, 6, 7, 8, 9, 10, and Tiangong 1!

The company has established R&D institutions such as the Provincial Enterprise Technology Center, the Provincial Engineering Technology Research and Development Center, and the Guangdong Academician and Expert Enterprise Workstation. In recent years, it has developed over 100 new technologies and products, securing 65 nationally authorized patents, including 4 invention patents and 17 key branded technical products. It has received 47 national honors, such as the China Outstanding Private Science and Technology Enterprise Innovation Award and Contribution Award, and 81 provincial honors, including the Guangdong Provincial Self-innovation Model Enterprise. On May 25, 2009, Wang Yang, a member of the Political Bureau of the CPC Central Committee and Provincial Party Secretary, highly praised the company's innovation achievements, stating, "Focusing on independent innovation leads to competitiveness. Such role models should be widely recognized and promoted."

The company was among the first in its industry nationwide to pass the ISO 9001 / ISO 14001 / OHSAS 18001 Quality / Environmental / Occupational Health and Safety Management System certifications, as well as Russia's GOST certification, China Environmental Symbol Product certification, and Guangdong Provincial Energy-saving Symbol Product certification. Its technical and economic indicators are at the forefront of the industry in China.