A HPL Additives Limited  leader in Polymer Additives Industry HPL was founded in 1964. Over the last 5 decades, it has established itself as a leader in the area of the of Chemical Blowing Agents (Exothermic and Endothermic) and has increased the product range to include Antioxidants, Azo-Initiators, Chain Extenders and Cross-Linking Agents for polymers, Water Treatment Chemicals, Specialty Chemicals, Hydrazine hydrate and Hydrazine derivatives.