Jiangsu Shemar Electric Co.,Ltd engages in the research and development, production, and sale of power system substation composite external insulation, transmission and distribution lines, and rubber seals in China. It offers transmission line products, including line post, braced line post, and composite insulated cross-arm insulators, as well as substation post insulators. The company also engages in the technology development and transfer, technology consultation, and technology services in the field of science and technology; import and export of goods and technologies; e-commerce; and sale of rubber products, power equipment and spare parts, and mechanical molds. In addition, it provides hollow, pillars, line insulators and bushings, transmission towers and crossarms, transmission conductors, dry-type insulated tubular busbars, cable accessories, substation supports, gas-insulated pipeline busbars, basin insulators, insulator auxiliary sheds, power transmission and distribution equipment and their parts; and sells of mechanical molds and accessories, as well as offers technical development, technical support, technical services, and technical consulting services.