TEC enjoys the confidence of their customer which includes blue-chip companies. There list of customers is every increasing, few of leading names are:

Aditya Birla Group Alfa Laval (India) LTD Bharat Heavy Electrical Ltd (Ranipet, Trichy, Hyderabad,Varanasi & Haridwar) Bellary Steel and Alloy Ltd. Bharat Earth Movers Ltd. Bajaj Hindustan Ltd. Essar Steel Ltd/Essar Engineering Services Ltd. Flakt Woods Ltd (Chennai & Calcutta) FFE Mineral Ltd / FL Smidth Group Ltd. Ispat Industries Ltd. Jaypee Reva Plant J K Paper Ltd. Jindal Steel Ltd. Kirloskar Toyoda Textile Machinery Pvt Ltd. Kudremukh Iron Ore Co Ltd. Larsen & Toubro Ltd. Lloyd Steel Industries Ltd. McNally Bharat Engg. Co Ltd. Manglore Petrochemical & Refinery Ltd.   National Mineral Development Corporation Neyvelly Lignite Corporation Premier Automobile Ltd. Pioneer Wincon Pvt. Ltd. Promac Engineering Industries Cobit Engineering Pvt.Ltd. TCF Nadi Industrial Fan Pvt Ltd. ThyssenKrupp Industries India TLT Engg (India) Vishakhapattanam Steel Plant   Welspun Gujarat Stahl Rohern Ltd.