Sonocom Co., Ltd. authorizes a Buyback Plan.

SONOCOM CO.,LTD. is a Japan-based company mainly engaged in the manufacture and sale of screen masks and photo masks for electronic industry. The Company operates through two business segments. The Screen Mask segment is mainly engaged in the manufacture and sale of screen masks for electronic components producing and printed circuit board surfaces mounting. The Photo Mask segment is mainly engaged in the manufacture and sale of photo masks for display element production. The Company is also engaged in the purchase and sale of printing machine, squeegees and other screen printing equipment.