Microwave Diagnostics on LHD and application to Industry Atsushi Mase University of Kyushu, Japan KASTEC laser and microwave group has participated diagnostic development program on Large Helical Device at National Institute for Fusion Science, Japan. Recently, main focus has been on a pulse reflectometry system and electron cyclotron emission imaging system. In this talk, a progress of these systems will be discussed. At the same time the group has been strongly coupled to microwave-related industries in mainly Kyushu area to develop a collaborative programs. This includes development plan for a new product and possible improvement of existing products.