Mr. Aoyama engaged in instrumentation control of petrochemical plants after he joined Mitsubishi Chemical in 1993. While working in the equipment engineering and maintenance department, he created leading examples by proactively utilizing and advancing field digital communication as well as plant maintenance. In the advanced process control projects of large petrochemical processes, he adopted multivariable model predictive control from overseas, which contributed to Mitsubishi Chemical gaining knowledge and experience in utilizing it by itself. He also introduced and actively promoted SIS, although awareness was relatively low at the company at that time. As a result, the plants could access SIS as standard technology. Currently, Mr. Aoyama is striving to promote DX technology overall to Mitsubishi Chemical plants in Japan.