CONTENTS Maruyama Glass Co., Ltd. sells aluminum building materials (building sashes, housing sashes) , exterior wall construction (ALC, siding) , and glass construction mainly in Matsumoto City , Nagano Prefecture and the Chushin district of Nagano Prefecture . Since our founding, we have set a policy of "quality principle" and want to meet the expectations of our customers and local communities. 855-7 Misatomeisei, Azumino City, Nagano Prefecture 399-8101 Telephone 0263-77-5640 FAX 0263-77-5661