Sulfur Coated Urea, abbreviated as SCU, is also known as sulfur-coated urea or coated
sulfur urea. By definition,
it is a slow-release fertilizer that uses sulfur as the main coating material to coat granular
urea, thereby achieving
the slow release of nitrogen. This type of fertilizer belongs to the category of inorganic
coated slow-release
fertilizers. Its products usually have an additional coating of a sealing agent (generally
accounting for 2% - 3% of
the total weight) and a conditioning agent (also generally accounting for 2% - 3% of the
total weight) outside the
sulfur layer. Under normal circumstances, the nitrogen content of Sulfur Coated Urea
ranges from 30% to 40%,
and the sulfur content is not less than 8%.​