High purity, security, early absorption, and good water soluble ability. Imported from Republic of Peru Disodium Octaborate Tetrahydrate(Boron Fertilizer)Sodium borate is over 99%Pure boron (B) : 21%Product standard: Q/PSB 21-2009 GB/T537-1997Boron is an essential element for crops growth like fruit type (oranges, Sugar cane, orange, grapefruit, grapes, apples, pears, etc.), rapeseed, soybean, ...