TopJoy Chemical is a company that specializes in the research and production of PVC heat stabilizers and other plastic additives. lt is a comprehensive global service provider for PVC additive applications. TopJoy Chemical is a subsidiary of TopJoy Group. TopJoy Chemical is committed to providing environment-friendly PVC heat stabilizers, especially those based on calcium-zinc. The PVC heat stabilizers produced by TopJoy Chemical are widely used in the processing of PVC products such as wires and cables, pipes and fittings, doors and windows, conveyor belts, SPC flooring, artificial leather, tarpaulins,carpets, calendered films, hoses, medical accessories, and more.