Building materials, supplies and fixtures manufacturers

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小山金属

addressTokyo/Chuo-ku/6th Floor, Nihonbashi KN Building, 3-2-14 Nihonbashi

last updated：Jun 19, 2026

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小山金属 Company Profile

This is an introduction to Koyama Metal Co., Ltd.

Utilizing multiple domestic and international locations, we manufacture and install high-quality hardware for various types of buildings. We employ the latest manufacturing technologies for advanced precision design, production, and reliable installation of original architectural hardware.

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Company name	小山金属
Contact address	postalcode 103-0027 Tokyo/ Chuo-ku/ 6th Floor, Nihonbashi KN Building, 3-2-14 NihonbashiView on map TEL：03-6281-9130
Industry	Building materials, supplies and fixtures manufacturers