... 5.SGS(RoHS) Shijiazhuang Sunpower Technology Co.,Ltd specilized manufacturer Zinc oxide from 1987s.Product Name: 99.8% Indirect-method ZnO Product ... acid, alkali and ammonia salt solution, and belongs to amphoteric zinc oxide.Application: All-steel radial tires, diagonal tires, automobile capsules, hoses ... .060.30.4Specific surface area (m²/g)%≥605045Particle size um20-40(um)25-4025 ...