Greystone Smelters Limited · Simsang Lime Products Private Limited · Virgo Cements Limited · Billennium Cements Limited · Greystone Ispat Limited · Greystone Strips Limited · Nongkhlieh Mines Private Limited. · Ratong Mines Private Limited. · Sutnga Mines Private Limited · Shella Mines Private Limited · Alpha Millennium Foods Private Limited · Cosmos Wahiajer Narpuh Cements Private Limited · Blue Seas Breweries Private Limited · Kb Cements Private Limited · Cosmos Cements Limited · Jp Cements Limited · Jaintia Energy And Power Private Limited · U14107 Ml1990 Ptc003401 · U26942 Ml1986 Ptc002570 · U64120 Ml1994 Ptc004120 · U27101 Ml2001 Ptc006426 · U27107 Ml2003 Ptc007285