Jan 31, 2019· Sonapur Minerals & Oil Pvt. Ltd. is one of the leading cement companies in Nepal.This is the largest cement company in the Western Nepal. They produce both PPC and OPC cement in Nepal. 07: CG Cement CG Cement is one of the leading & best-selling cement companies in Nepal. Its fully compact cement factory situated at Dumkibas, Nawalparasi.