Luong Son Bac Co., Ltd is a supplier from Viet Nam listing cast iron and composite manhole covers on Global Trade Plaza. The cast iron range uses cast iron and ductile iron, conforms to BS EN124, and is available in square, round and other shapes with black bitumen or epoxy coating. The composite range is made from fiberglass FRP composite, also meets BS EN124, and comes in similar shapes with forging, machining and surface treatment where required. Both product lines carry the LSB logo and can be customized on request.