WEN SAN electric (Shanghai) Co., Ltd. is a subsidiary ofWEN SANelectric group. Its predecessor was pf company founded in 1894. In 1954, PF was divided into Frelai company focusing on power quality and PF company focusing on automation field. Frelai company, headquartered in feilaibao, Germany, focuses on power factor compensation and harmonic governance of power factor compensation for power transmission and distribution systems and users in various industries, Have rich experience in this field and provide reasonable solutions for customers. In Germany, Spain and Italy, it covers product production, complete engineering and technology research and development, with sales network and performance all over the world. Frelai brand is well-known among customers in power transmission and distribution and industrial fields!

As a green distribution energy expert, since entering the Chinese market, WEN SAN has helped enterprises and users improve power quality and reduce electricity cost through high-performance and environmental protection solutions. At present, Frelai has made great achievements in China, with representative offices in more than 20 provinces, autonomous regions and municipalities directly under the central government. Advanced technology, excellent quality and honest service make the company's sales ahead of the peers. It has hundreds of customers in China, including metallurgy, steel, petrochemical, urban rail transit, paper, glass, coal, electronics, municipal construction, medical treatment, building materials, textile, chemical fiber, food, tobacco and many other industries.