Urea, whether or not in aqueous solution, containing < 45% by weight of nitrogen on the dry anhydrous product (excl. goods of this chapter in tablets or similar forms or in packages of a gross weight of < 10 kg)
Urea, whether or not in aqueous solution, containing > 45% nitrogen in relation to the weight of the dry product (excl. that in tablets or similar forms, or in packages with a gross weight of < 10 kg)