Ashita Techno Enterprise
Leading manufacturers of transformers, Mumbai.
http://www.ashitatechno.com/

Lenco Electronics, Inc.
Power transformers: Lenco specializes in a wide variety of custom transformers from isolation transformers, Ferro resonant transformers, Autotransformers, Three phase transformers, and Inductors. Lenco also offers the option of NEMA 1 enclosures with 7 available sizes, which are designed for three phase transformers, however modifications can be made to install single-phase transformers as well.
http://www.lenco-elect.com

Trafomatic
Trafomatic - production of toroidal transformers: push-pull triode, single - ended, ultralinear and pentode power tube configurations.
http://www.trafomatic.com/

ELCO Industries Ltd
Medium and large power transformers and mobile substations. Transformers from 10 mva to 800 mva and 69 kv to 500 kv. Mobile substations - to 230 KV and to 50+ MVA.
http://www.elco-ind.com/

Italtras
Produzione di trasformatori a giorno, resinati da CS e basso profilo con marchio ENEC, trasformatori toroidali marchio cURus (UL+CSA), trasformatori in ferrite, trifase
http://www.italtras.com

Hivoltrans Electrical
Manufacture EHV grade instrument transformers up to 245 kV, DC isolation transformers and high voltage testing transformers.
http://www.hivoltrans.com

Unitech Transformers Pvt. Ltd.
Manufacture & supply of Transformers, Industrial Transformers, Industrial Chokes, Transformers & Chokes, Electrical Components, Electronic Components, Distribution Transformers, Single Phase Power Transformers, Mumbai, India
http://www.unitechtransformers.com/

Tesla Transformers Ltd.
TESLA Group is a 12 million US$ multi product and service organisation and is contributing to Electrical Power Sector dealing in manufacturing, supply, erection, testing and commisioning of distribution and power transformers, complete substations and turnkeywith distinction and credibility over the past 30 years. Owing to adherence to International Quality norms and prompt customer services, TESLA Group has an excellent brand image. TESLA headquarter is in Bhopal (India) and it has branch offices all over Asia and US.
http://www.teslatransformers.com/

Jensen Transformers
Manufacturer of high-fidelity audio and specialty transformers. Good source of valuable technical information on the use of transformers.
http://www.jensen-transformers.com/

Quality Transformer Corporation
Design and manufacture single & three phase transformers, custom transformers, chokes, inductors, amplifiers and toroidal transformers.
http://www.qtran.com/