Nanjing Huamai Technology (南京华脉科技股份有限公司) is a company that specializes in the research, development, design, manufacturing, and sale of optical communication and telecom products. It offers cooling passages, drop cables, couplers, fiber joint enclosures, telecom batteries, data cabinets, outlets, and other equipment. The company caters to various sectors, including oil and gas pipeline networks, and electric power, television, and communication markets.