Jiangsu Shemar Electric Co.,Ltd engages in the research and development, production, and sale of composite external insulation for power system substations, composite external insulation for power transmission and distribution lines, and rubber seals in China. It offers transmission line products, including line post, braced line post, and composite insulators; substation includes substation post insulators, compact composite substation gantry, new explosion-proof transformer composite bushing, anti-flashover solution, and overall sealing solution; and distributes distribution line post insulator. The company also engages in; and sale of rubber products, power equipment, and molds; provides hollow, post, and line insulators and bushings, crossarms, transmission conductors, dry-type insulated tubular busbars, cable accessories, substation support structures, gas-insulated pipeline busbars, pot-type insulators, insulator auxiliary skirts, power transmission and distribution equipment and their parts; processing and sales of mechanical molds and accessories, as well as technology development, technical support, technical services, and technical consulting. Further, the company is involved in the export of products and technology; and import business for machinery, equipment, spare parts, raw materials, and technologies. The company was founded in 1996 and is based in Nantong, China. Jiangsu Shemar Electric Co.,Ltd operates as a subsidiary of Shanghai Shenma Electric Power Holdings Co., Ltd.