Ferrous sulphate and sodium metabisulphite and zinc oxide
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Changsha Lantian Chemical Company Limited is a leading manufacturer and exporter of chemical products in China.
The following is the specification:
1. Ferrous sulphate
Purity:91%Min, Fe: 30%Min, As: 0.0002%Max, Pb: 0.002%Max.
2. Sodium metabisulphite
Purity:96%, SO2:65%, Waterinsolublematter:0.05%, Fe:0.005%, Pb:0.002%, As:0.0002%. PH: 4.0-4.6
3. Zinc oxide
Zn: 72%Min, Pb: 50ppm max, As:25ppm max, Cd:35ppm max
Package: 25kg p. p. bags
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