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granular water soluble fertilizer NPK 16-3-5 ETDA-(Ca,Mg,Zn) ≥2.8% S ≥15% Alginic acid ≥5% Potassium fulvate ≥15% Polyglutamic acid (PGA) ≥3% polyaspartic acid (PASP) ≥2.5% Soil Conditioner ≥1% Rooting agent ≥1% quick effect , full water soluble，drip...