About us

ZTELEC company was founded in 1958, as a national enterprise offering electric insulation systems and components for national motor and power companies, military and aviation enterprises. Nearly 60 years production and R&D experience, developed to now Zhongtian group mainly provides insulation materials, special materials, power transmission and transformation whole set, transformers, enameled copper wire etc high-end products. We are the most powerful and competitive manufacturer and system solution provider in the industry.

59 years of professional experience. Centre on the power transmission and transformation industry, our group company has 5 major brands covering insulation materials, electronic copper clad sheet, enameled wire, transformer, power transmission and distribution industry etc. Xujue, Zhongtian, Baoshi, these 3 brands are all famous trademarks in China. ZTELEC now has five branches, and an engineering institute, the total area of 300 thousand square meters, technical personnel occupies 26% of total staff, college degree or above accounted for 38% of the total number of employees. It is the key enterprise of national mechanical ministry, and key supporting enterprises for COSTIND . Has 36 national invention patents, product seven categories of more than 160 varieties, including 38 national high-tech products, insulation materials production capacity and market share of the top three in the industry and special insulation ranked first.

ZTELEC keeps extending its industrial chain in field of power industry, and integrates research, development, production, and sales of major products like Dupont technology dry type transformer, oil-immersed power transformer, phase-shifting rectifier transformer, mining flameproof dry-type transformers, pre-installed type transformer substation, high and low voltage switchgear, smart grid system, electrical system, electrical system (below 35 kv), electromagnetic wire and other high-tech products. Product technical performance reaches domestic advanced level,and meet the needs of the current electrical power equipment industry development.

Strong productivity. Production according to the geographical advantage distribution in Henan, Sichuan, Guizhou, Guangdong and other provinces, sales and service centers all over Hong Kong, Vietnam, Thailand and so on. Everyone in ZTELEC believes the value of brands, which originate from not only excellent products and solutions, but also considerate pre-sales & after-sales technical services. So, we have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site surveys, sample analysis, program design, installation debugging and maintenance guidance, which can ensure that each link is docking in pace with customers and timely solve customer needs.

Development History

Established in 1958, ZTELEC has had 59 years of experience in Insulating material industry. So far, ZTELEC has complete R&D, production , sales and service system, becoming a distinguished manufacturer in ChineseInsulating material industry and competing the world market with global famous enterprises.


  • In 1958, Northeast Electrician Seven Factory and Northeast Electrician Four Factory who were directly affiliated to the central government moved into Xuchang city, Henan provice and established “State-run Xuchang Insulation Materials Factory” and “State Xuchang Insulation Materials Research Institute”.
  • In 1962, the Xujue insulation materials company successfully developed B-class, F-class insulation impregnated paint, 1730 enamel paint line, becoming one of the three major manufacturers in China.
  • In 1975, the Xujue insulation material factory in the introduction of the former Soviet Union on the basis of glass cloth, self-developed 2432 alkyd silicone glass cloth, 2310 polyester paint thick, 2210 Polyester paint thick, 2450 Silicone varnished glass cloths, filled the gaps in domestic production and access the State Ministry of Machinery Industry excellent products.
  • In 1987, Xuchang Insulation Materials Main Factory produced 380 high strength bearing cloth tube, obtained high-quality production in Henan Province, replacing the low noise bearings cage importing situation, and widely used in military-industrial industry.


  • In 1995, Xujue company independently developed 3240 epoxy board, rod, tube. And obtained the national machinery department superior products.
  • In 1967,Xuchang Insulation Material Company changed to State-run Xuchang Insulation Material Comapny,and it is the national major insulation material manufacturing center ranked Fifth in this files in mainland China
  • In 1993,restructred into joint-stock enterprise
  • In 2000,declared bankruptcy
  • In 2003, “Henan Xujue Electrician Insulation Material Ltd, Co.” was founded . And at the same year, successfully developed nanometer glass cloth tube with temperature resistance above 300℃. Widely used in laser welding gun, because its high temperature and low cost, so replaced the original ceramic products.
  • In 2005, independent research and development product non-metallic missile shells was batch purchased by Aerospace Science and Technology Group, making a significant contribution to China’s artificial rain.
  • In 2006, successfully researched & developed nanometer high temperature insulation tape, and was incorporated into the domestic exclusive supplier by Shenyang Liming aviation group engine co., LTD.
    In the same year, our independent researched & developed H-class polyester imide glass fabric cloth tube was brought into the national torch program, which is widely used in the Dupont H class dry-type transformers.
  • In 2007, produced 3240 epoxy sheet, 6630DMD and 3025 phenolic glass cloth sheet etc. And become qualified suppliers of China aviation industry.
  • In 2008, “Henan Zhongtian electric equipment group” was founded. And successfully developed a class C brace, became the exclusive supplier of China Zhongche Zhuji Ltd, Co., which is widely used in high-speed railway. At the same year, we started the manufacturing of transformers with the cooperation with KFL Electronics GBMH, Germany, and they invested more than 5,000,000 dollars introducing the world level production lines, testing equipment and design technologies.


  • In 2010, combined with German KFL electronics group.
  • In 2011, obtained ISO9001:2008 International Quality Management System Certification, and ISO14001 Environmental Management System Certification. And also passed the verification system from Schneider Electric (France) and become one of their main suppliers on VFD inverter transformers. In the same year, Xujue company provided 6 500KM/h experimental motor cars high temperature resistance dog bones for China Zhongche Zhuji Ltd, Co..
  • In 2012, successfully passed the product quality and production process of Schineder Electric in France, and became its sole supplier in central China.
  • In 2013, for many years for China Aerospace mating ultra high temperature resistance and high voltage resistance special insulation materials, applied to the ” Shenzhou 1 “to the “Shenzhou 11”, and Tiangong 1, we received a special award from China Aviation Industry Group.
  • In 2014, we established overseas offices in India and Russia and actively explored international markets.
  • In 2015, our products won the certifications of ROHS, REACH and UL in sequence which enables us the capabilities entering US and Europe market. And passed ABB China supplier system audit, become ABB China’s cooperation enterprise in high voltage inverter industry.
  • In August 2016, EEC became a shareholder in China ZTElEC Group.
  • In March 2017, Henan Zhongtian Electrical Equipment Group reorganized, merged Xujue Electrical Co., Ltd., Vietnam VNEEC company, and established Henan Zhongtian Aviation Technology Group. In July 2017, wholly-owned acquisition one of China’s five largest enameled wire factory Chengdu Southwest Electric Co., Ltd, formerly known as the Shanghai China Electrical Factory which was founded in 1969.