Jiangsu Shemar Electric Co., Ltd. is a China-based company mainly engaged in research, development, manufacturing and sales of composite external insulation of power system substation, composite external insulation of transmission and distribution lines and rubber seals. Substation composite external insulation products mainly include substation composite insulators, transformer composite bushings and switch composite bushings. Composite external insulation products of transmission and distribution lines mainly include line composite insulators and composite cross-arms. Through in-depth research on the sealing structure of electrical equipment, the material of seals and the installation process of seals, the company has developed an integrated sealing solution for electrical equipment. The Company operates its businesses in both domestic and overseas markets.