Unsaturated Polyester Resin (UPR) is a versatile chemical material widely used in various industries such as construction, automotive, and marine due to its strength and lightweight properties. The production of this material required key raw materials, including acids, alcohols, glycols, and additives.

Glycerine appears as a colorless to brown colored liquid. Combustible but may require some effort to ignite. Glycerol is a triol with a structure of propane substituted at positions 1, 2 and 3 by hydroxy groups. It has a role as an osmolyte, a solvent, a detergent, a human metabolite, an algal metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a mouse metabolite and a geroprotector. It is an alditol and a triol. A trihydroxy sugar alcohol that is an intermediate in carbohydrate and lipid metabolism.

Maleic anhydride (MLA) appears as colorless crystalline needles, flakes, pellets, rods, briquettes, lumps or a fused mass. Used to make paints and plastics and other chemicals. Maleic anhydride is a cyclic dicarboxylic anhydride that is the cyclic anhydride of maleic acid. It has a role as an allergen. It is a cyclic dicarboxylic anhydride and a member of furans.