... )2 SO4Free Acid0.03% maxHS Code31022100Grade Standardcaprolactam gradePlace of originChina(mainland)ApplicationAgriculture,FertilizerBrand NameJUHUAAppearancewhite crystal, color stability. Payment & Shipping Terms: ... leather industry;used in fertilizer,dying, chemical, leather, the raw material of ammonium persulfate,adjuvant, glufosinate ,herbicides,etc. PackingLoadingApplicationPlease feel free ...