The business scope of HENGTONG is manufacturing, sales and technical services of optical fiber composite overhead ground wire (OPGW), optical fiber composition phase conductor (OPPC), overhead power transmission line （ACSR, AAAC, AC wire, aluminum wire, etc.）and electric railway equipment and materials (copper alloy contact line, carrier cable and related products). It is the core initiator of smart power grid products in China, the drafting unit of national standards, the global grid key project difficulty solution provider. HENGTONG is a national key high-tech enterprise, always adheres to promote “science and technology – quality - service” triune global brand strategy, leads the direction of the company with technological innovation capability, and strives to cultivate their own intellectual property rights.