Complex sentence: NDMA is an industrial by-product or waste product of several industrial processes, such as manufacturing of unsymmetrical dimethylhydrazine (UDMH), which is a component of rocket fuel that requires NDMA for its synthesis.
Split into simpler sentences: NDMA is an industrial by-product or waste product of several industrial processes. Manufacturing of unsymmetrical dimethylhydrazine (UDMH), which is a component of rocket fuel that requires NDMA for its synthesis.