P.II42.5R, P.II42.5: large area concrete, such as airplane runways, and viaducts

P.O42.5R, P.O42.5, P.L42.5, P.C42.5: bridges, roadways, high-rise buildings,

normal industry and....

Specifications:

1) Chemical formular: PbO

2) Molecular weight: 223.2

3) Character: yellow, heavy powder, poisonous

4) Indissoluble in water and alcohol

5) In conformity with....