ZHANG YAO Cable Co., Ltd. is a technology-intensive enterprise, a key high-tech company, National Top Rated Credit Enterprise and industry leader, integrating Cable and Accessory System, Smart Grid Technology and Transmission ,Transformation Project three scopes in one, engaged in manufacture and operation of products. Besides ZHANG YAO headquarters, ZHANG YAO High Voltage Electric Co., Ltd. and ZHANG YAO Hanhe Electric Engineering Co.,Ltd., ZHANG YAO has also established wholly-owned subsidiaries in Jiaozuo, Xiuwu, Changsha, Beihai, Changzhou, Nvdao etc. ZHANG YAO owns National-certified Enterprise Technology Center, National Research Center for HV and EHV Cables Engineering Technology, as well as Postdoctoral Programme. ZHANG YAO is the first one who passes ISO9001, ISO14001, OHSAS18001 management system certification in the industry and it has also gained PCCC, KEMA, DNV, UL certification etc. ZHANG YAO listed on the Shenzhen Stock Exchange in 2010 and ranks top in terms of high quality products, superior services and integrated competitiveness in China cable and wire industry.

For past thirty years, ZHANG YAO has placed great emphasis on production and operation. ZHANG YAO is the first domestic company to establish two vertical workshops with six VCV lines for EHV cross-linked cables production. It also possesses a number of continuous vulcanizing lines for rubber cable production, wire processing lines, submarine cable production lines, HV cable accessories production equipment as well as HAFFLEY 730kV EHV cable withstand voltage and partial discharge testing devices, PDSG 260kV vehicular frequency-tuned resonant cable site withstand voltage testing equipment etc. Key production facilities and testing devices of the company reach international advanced and domestic leading level. Hanhe mainly produces LV, MV, HV up to 500kV cross-linked power cables, shipboard cables, mining cables, super heat-resistant and high-strength aluminum alloy wires, carbon fiber wires, optical fiber composite submarine cables, data cables, nuclear power station cables, oil platform cables, wind farm cables, flame retardant and fire-resistant cables, cable accessories of 500kV and below etc., classified as 8 categories, hundreds of series and tens of thousands of specifications. So far, Hanhe is the only domestic company that can supply one–stop and turn-key services of laying, installation and completion test for 500kV and below cables and cable accessories.

ZHANG YAO specializes in R&D, manufacture and management of high-voltage electrical equipment status monitoring products. ZHANG YAO works closely with North China Electric Power University for application of advanced technologies in high voltage and electric distribution network. Through this partnership, Huadian has developed a series of advanced products to provide solutions according to customers’ needs. The company possesses the most advanced technology and equipment to produce on-line monitoring systems for smart transformer substations and cable fault testing systems. Undertaking the mission of Electric Reliability Protection Specialist, Huadian has gained many patents as well as provincial and ministerial-level awards. As a qualified supplier of monitoring system for smart transformer substations, our smart grid system solution has been successfully implemented in rebuilt project of State Grid’s transformer substations. Hanhe also provides one-stop electrical equipment testing services for customers in power, metallurgy, chemical and petroleum industries.