Dalian Composite Insulator Co.,Limited (DCI), a subsidiary of TCI, specializes in composite insulators of all kinds for high-voltage applications and related products. Main products include composite insulators for electric power lines from 10 to 800kV, composite insulators for electric railways, phase spacers, disconnecting switches, bushings, surge arrestors, etc. Our products have a good reputation in international markets.

Our Factory is well equipped with all worldclass facilities, such as programmable tensile load testers, crimping systems with acoustic emission detectors, fully automated rubber injection moulding machines, vulcanization testers, a complete set of power frequency transformers and impulse voltage generators. Our annual production capacity of composite insulators is 500,000.

Our own designed and manufactured anti-pollution type composite post insulator with porcelain core composite consists of a porcelain core, sheds and metal fittings. The inner insulation is made of high-strength porcelain by isostatic pressing processing technology,can bear the whole mechanical load in the running. The shed is made of composite material and the raw material is silicone rubber by the high-temperature injection technology, it has provided insulation and necessary creepage distance, to ensure the composite post insulator running long-term and safety in the atmosphere environment. When the porcelain insulator breaks due to the brittleness, the wrapping to porcelain core by shed can reduce the harmful influence to the workers at working site and other electrical equipments around.

Our composite insulator products passed the tracking and erosion test at CESI Mannheim, Germany in 2010.

We implemented the ISO 9001:2015 Quality Control and the ISO14001:2015 environmental management systems. DCI's management and comprehensiv ecompetitiveness, quality of products and services, benefited enormously. DCI’s products have been exported to Europe, America, Oceania, Africa and Asia. In the Middle East, DCI has taken a big share in the 132KV and higher composite insulators market. DCI wins international tenders frequently and has established stable cooperation with many overseas electricity authorities, such as BC Hydro in Canada, Florida Power Corp., Kansas Power & Light and New York State Electric & Gas inUSA, CELEC S.A in Ecuador, Columbia Power in Columbia, ESKOM in South Africa,KPLC and REA in Kenya, ZESCO in Zambia, TANESCO in Tanzania, TCN in Nigeria,PPC in Greece, MOSDORFER CCL in UK, Norwegian State Power Grid (Statnett) and Hafslund Netts in Norway, PC1 and PC2 in Vietnam, TNB and SESCO in Malaysia,REB in Bengal, JEPCO and NEPCO in Jordan, SEC in Saudi Arabia, and Fars REC in Iran. We also have long-term cooperation with a lot of large international electricity companies like TYCO, ABB, AREVA, ALSTOM, PLP, Victor, EB, NTP and Siemens. Our electric railway insulators have been exported to New Zealand,Finland, Norway, Italy, Azerbaijan, Taiwan, etc. Our high quality products and services help us to obtain broad market share and good reputation.

If you are interested in cooperating with us, please contact us for more information. We hope we can establish a sound business relationship with you, and we will strive to meet all your business and product needs.