The demand for polycarbonate (PC) broadly used in compact disk and automobile parts, and epoxy resins used in coatings, laminated plates, adhesives, etc. has grown in parallel with the development of industry. Our crystallization, separation, and distillation technologies are playing an important role in the facility for manufacturing bisphenol A, the raw material of these resins. Centering on a type of double propeller (DP) crystallizer, which has unique agitating blades, our core technology is contributing to the development of industry.