DYD Refrigeration Systems Inc. is a manufacturer of polyurethane insulated panels and doors based on Korean technology, offering cold storage, refrigeration equipment, and food processing equipment to clients in the Philippines. Established in 2003 and jointly owned by DN Steel group of companies and Korean investors, DYD provides advanced technology solutions in polyurethane manufacturing for small, medium, and large-scale cold storage applications. The company focuses on providing structural insulated panels, doors, and freezers, showcasing a wide range of products for various cold storage needs.