a) Grain size: < 20 μm; b) Specific surface area 4-15m2 / g; c) Impurity content: nickel, chromium, copper and zinc content < 100 ppm; Magnetic material content < 1 ppm;
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Brand:
Tongling Nayuan;GHTECH;NEXTTECH;Tinci;Mobimo;Hunan Yacheng;Tsaker Chemical