Widely used as a filler in plastics, light calcium carbonate improves the mechanical properties and dimensional stability of plastic products. It is commonly added to polyvinyl chloride (PVC), polypropylene (PP), and polyethylene (PE) to reduce material costs and enhance stiffness. In the paper industry, it serves as a key component in coating and filling formulations, improving brightness, opacity, and printability of paper. It also helps control ink absorption and surface smoothness. In paints and coatings, light calcium carbonate acts as an extender pigment, improving dispersion, film strength, and resistance to settling. It contributes to improved opacity and sheen control in both interior and exterior paints. As a raw material in construction materials, it is used in tile adhesives, sealants, and cement-based products to improve workability and reduce cracking. It also functions as a pH stabilizer and filler in adhesives and caulking compounds. In the rubber industry, it enhances tensile strength and elongation properties while reducing production costs. It is used in tires, belts, hoses, and other rubber goods. Additionally, it finds application in environmentally friendly products such as biodegradable plastics, where it increases biodegradation rates and reduces reliance on petroleum-based materials.