TECH-MART ENGINEERING - KOLKATA

R K R Graphite (p) Ltd.

1, A.j.c Bose Road, 4th Floor,, Kolkata - 700020, West Bengal, India

Tech-mart Engineering

966, Dakshin Panchpota, Garia,, Kolkata - 700152, West Bengal, India

Maco Corporation (i) Pvt Ltd.

2/5, Sarat Bose Road, "sukh Sagar" 7th Floor, Suite No : 7a,, Kolkata - 700020, West Bengal, India