Indian Technothermic Company Limited · Debdoot Minerals Private Limited · Indian Technorem Company Private Limited · Itcol Minerals Limited · Itcol Hydrocarbon Limited · Itcol Techno Industries Private Limited · Indian Technocam Company Limited · Indian Technominerals Company Limited · Treasury Minerals Private Limited · Itcol Alloys Company Limited · Itcol Metals Limited · Itcol Shipping And Logistic Limited · Indian Technotrade Company Limited · Thunder Coal And Mines Private Limited · Indian Techno Research Private Limited · Indian Technolime Company Limited · U24112 Up1987 Ptc008776