熟妇高潮精品一区二区三区,亚洲av无码乱码国产精品fc2,中文字幕av一区,六月丁香综合在线视频

Telephone:+(86)-(411)-87260188

 
Specialty Chemicals

?Zinc dispersions are used as ingredients in the vulcanizing of rubber.
?Zinc salts are used in the production of plastics.
?Zinc borate and zinc chlorides are used in flame-retardants.
?Zinc diacrylate is a key ingredient in the manufacturing of golf balls.
?Anti-corrosion materials such as zinc chromate and anti-wear additives such as zinc dithiophosphates for the lubricant industry are manufactured using zinc oxide.
?Zinc oxide can be dissolved in phosphoric acid for use in the coating and metal priming industry and in sulfuric acid for electroplating.

Standard: GB/T3185-92
 Item Index
 Model Top garde First grade Qualified product
 Zinc oxide(as Zno)%,≥ 99.7 99.5 99.4
 Metals (as Zn)%,≤ No No 0.008
 Lead oxide（as Pb）%,≤ 0.037 0.05 0.14
 manganese（as Mn）%,≤ 0.0001 0.0001 0.0003
 Copper oxide（as Cu）%,≤ 0.0002 0.0004 0.0007
 Insoluble matter in HCI%,≤ 0.006 0.008 0.05
 Loss on ignition%≤ 0.2 0.2 0.2
 Residue on sieve（45um）%,≤ 0.10 0.15 0.20
 Water soluble matter%,≤ 0.10 0.10 0.15
 Volatile matter on 105℃%,≤ 0.3 0.4 0.5