ACID PRECIPITATION PH 0 ~2 <\/p>
FA 90 ~100 <\/p>
HUMIC ACID PURITY 90 ~100 <\/p>
pH 6 ~8 <\/p>
APPEARANCE BLACK POWDER <\/p>
MELTING POINT >300℃ <\/p>
HEAVY METALS(AS PB) 0 ppm~ 50 ppm <\/p>
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