Activity in year 2025
1. The TDMA association organized an Open House event as part of its Corporate Social
Responsibility (CSR) project to promote education, in collaboration with Gemological Research (Thailand) Co., Ltd. and H&A Cutting Works Ltd.
The visit was led by Ms. Claudia D’ Andrea, a member of TDMA Association the management team from, Gemological Research (Thailand) Co., Ltd. together with students from the institute. On 26th March 2025.  Visit H&A Cutting Works Ltd. Company And take a tour to production line and attend a presentation about the company’s operations from management team by Mr. Jean Paul Tolkowsky together with Mr. Arnaud Tolkowsky and Mr. Nitesh Gevaria.