... indirect(French)method 99.8% 2.0#zinc ingots as raw materials 3.pass ISO 9001:2000 4. ... 5.SGS(RoHS) Shijiazhuang Sunpower Technology Co.,Ltd specilized manufacturer Zinc oxide from 1987s.Product Name: 99.8% Indirect-method ZnO ... acid, alkali and ammonia salt solution, and belongs to amphoteric zinc oxide.Application: All-steel radial tires, diagonal tires, automobile capsules ...