The investments will create 282 new jobs for Thai workers, he said.
The 13 firms are include five service firms from Japan, Singapore and Sweden with a Bt35 million investment value, such as a research and development firm for natural fibre, an accounting firm, a research service centre, and manufacturing for rent.
The next five firms were from the Netherland, South Korea, Hong Kong with a Bt4.76 billion investment value. They are made up of a hire purchase and leasing firm, auto service management and auto check up, online gaming and a mobile game unit, service for rental of intravenous administration devices and Haemodialysis Orthopaedic pilot machines.
On firm is a wholesale business from China with an investment value of Bt24 million.
The final two, from South Korea and China, are investing in engineering design and the design of a plastics plant, and are valued Bt390 million.
From January until August 2019, the department has approved 137 foreign firms in total, with an investment value of Bt21.17 billion. That represents a 23 per cent drop in the number of firms from the same period of last year, but a 148 per cent increase in investment value, said Vuttikrai.