DD Diamond Corporation with the aim of customer satisfaction, started out as a joint venture company between D.I Corporation and Disco Co., Ltd. a world leading diamond tool maker based in Japan in 1995. For the purpose of delighting customers we are doing our best to provide our customers with high precision and high quality diamond tools.

Our advanced facility, clean environment and excellent ongoing research efforts have been well known to our customers. Also the quality of diamond tools has been acknowledged so that the export amount to Japan, USA, Europe, etc. has been rapidly increased.

As a leading diamond tool manufacturer in 21st century, we are developing various advanced tools and controlling planning, production and customer service under ISO 9001, furthermore we have tried to find a way to make customer profitable thorough production improvement and cost saving.


Our advanced facility, clean environment and excellent ongoing research efforts have been well known to our customers. Also the quality of diamond tools has been acknowledged so that the export amount to Japan, USA, Europe, etc. has been rapidly increased.

As a leading diamond tool manufacturer in 21st century, we are developing various advanced tools and controlling planning, production and customer service under ISO 9001, furthermore we have tried to find a way to make customer profitable thorough production improvement and cost saving.