Corporate Profile

Beyond and above...Our ultimate goal.

Towards the enterprise which appeals for the existence as “Only One”.

The world of the technology of the quartz crystal is transforming toward the new generation, just like a large liver stream flowing into the ocean. We are questioning to ourselves. "What to do now to show our capability in the future? "What is necessary to be a van of the new era?". Of course, it is natural for us to comply with an individual requirement from customer. However, we are believing that we need continuing effort to improve our product and service. We further believes that our progress will not be possible without "challenging to higher goal", "thinking from customer's view", and "repeated consideration and trial". We look forward to being a company that appeals for our existence as "Only One".

●Corporate Profile

Established 1967
President & CEO Takao Koyama
Address 854 Uchino, Niigata City , 950-2112 Japan
Tel 81-25-263-3300 / Fax 81-25-263-3133
Capital 30 Million Yen
No. of employees 50
Business Profile Development, Manufacturing and Distribution of Quartz Crystal Units for Industrial and consumer applications.
Financial Banking Daishi Bank, Sumitomo Mitsui Banking Corporation, Hokuetsu Bank, Bank of Tokyo-Mitsubishi, The Shoko Chukin Bank.


1967 Founded as Koyama Manufacturing Co.
1974 Production of Quartz crystals begins.
1981 Volume production begins for low frequency quartz crystals.
1988 Volume production begins on the 49U/S version.
1991 Renamed SUNLEAD CO.LTD.
1997 Production begins on the 2.0mm height SL-MG SMD crystal.
1998 Joint development with the Industrial Research Institute of Niigata Prefecture.