Hoang Hai Investment Joint Stock Company headquartered in Hanoi, Vietnam is one of the biggest producer and supplier Cement, Clinker, Quick lime, Dolomite and Hydrated lime. We produce, supply and exporta wide range of lime-based products including: - OPC 42.5R(PC 40), Cement 42.5N(PCB 40), PCB 30 - Gray Portland Cement Clinker type I - Quicklime (burnt lime/ unslaked lime/Calcium Oxide/ calcined lime), - Hydrated lime (Calcium hydroxite), - Slaked Lime, - Dolime (dolomite lime/ ...