Organosilicon compounds, or organosilicones, are defined as substances containing Si–C bonds, with at least one organic group directly bonded to a silicon atom. By convention, compounds in which organic groups are linked to silicon atoms via oxygen, sulfur, nitrogen, or other heteroatoms are also classified as organosilicon compounds.

Organic amines are an important class of organic compounds whose molecular structures contain amino (–NH₂), imino (–NH–), or secondary amine (–N–) groups, with these nitrogen‑containing moieties directly bonded to hydrocarbon substituents such as alkyl or aryl groups. They differ from ammonia (NH₃, in which nitrogen is bonded to hydrogen atoms) and amides (in which nitrogen is bonded to an acyl group). As core functional‑group compounds in organic chemistry, organic amines are widely found in nature—such as in alkaloids and proteins—and in synthetically produced substances, playing an indispensable role in fields including chemical engineering, medicine, and agriculture.

Chemical raw materials are the feedstocks used to manufacture products such as chemicals, plastics, rubber, fibers, coatings, pharmaceuticals, and agrochemicals. They come in a wide variety of types and, based on their origin, are generally classified into two major categories: organic chemical raw materials and inorganic chemical raw materials.

Chemical fertilizers are produced through chemical synthesis or extracted from natural minerals, and they are rich in one or more essential nutrients required for plant growth. Compared with organic fertilizers such as compost and manure, chemical fertilizers feature high nutrient content, rapid effectiveness, stable nutrient forms, and ease of transportation and application. They are an indispensable input in modern agriculture, playing a crucial role in ensuring food security and achieving high crop yields.