... factory 5.Indirect process Product name: zinc oxide 99.7% - Indirect Zinc oxide: 99.7%, etc. Zinc Oxide: White hexagonal crystal ... . It is ultraviolet radiation resistant, and will not become black meeting with sulfureted hydrogen.Useage: Used as white dyestuff and ... oxide is obtained. Specification: Index zinc oxide Industry Grade ZnOZnO , %≥99.7%PbO , %≤0.08CuO , %≤0.0001Mn , %≤0.0002As, %≤NoneZn , ...