Boric Acid B2O3:48.5% min boron: 17% min, special for agricuture; used for making ceramics. Glazes, cements, wicks ... 25KG net eachDear Sir, This is Sunny from Zhengzhou P&B Chemical Co., Ltd., we are a professional exporting company for ... inquires, please don't hesitate to contact with me. P&B Industry and Agricultural Grade Boric Acid at high purity