Boron Liquid 1.Certificate:ISO,IMO 2.Black brown liquid 3.PH3.5-5 4.Delivery time:10-20days Boron Liquid Product feature: Black brown liquid, pH: 6-8, specific gravity: 1.28-1.33Main ingredient: B2O3≥200g/L, N≥90g/L, Organic matter≥200g/LEfficacy: Correct Boron deficiency, involved in the synthesis of cell wall composing, promote pollen viability, seed set and fruit set, protect flower and fruit ...