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- our organic potassium fertilizer, it is really very suited to your organic fertilizer principle as foliar spraying organic potassium fertilizer. Our "Fu Wan Jia" brand organic potassium fertilizer is mainly made up of potassium and organic substance(little-molecule propionic acid).K2OR220g/L,organic substance380g/L,PH value:6.0~8.0,Zinc20.8mg/kg.Contain no harmful things and residuce.
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