... grade productFirst grade productSecond grade productAppearancewhite fine crystalThiourea[(NH2)2CS]%≥99.59898Melting point(dry basis)°C185175170Moisture%≤0.050.51.0Ash%≤ ... container,we can mix different items in one container.2.Quality control,before shipment,free sample for test after shipment, ... as your request,with photo before shipmentany question, welcome here! (factory) Thiourea industrial grade