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| 森友 | ||||||||
| 千葉教習センター | ||||||||
| 南宇和森林組合(愛媛県) | ||||||||
| 大阪教習センター | ||||||||
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| 愛知教習センター | ||||||||
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| 株式会社友神金属(茨城県) | ||||||||
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| 株式会社寺田商店(三重県) | ||||||||
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| 株式会社平成照会(大阪府) | ||||||||
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Established a construction machinery division at Sumitomo Machinery Industries Co., Ltd. (now Sumitomo Heavy Industries Co., Ltd.).
Established the sales company 'Sumiki Construction Machinery Sales Co., Ltd.' with a capital of 100 million yen as the domestic general agent for construction machinery, fully funded by Sumitomo Machinery Industries Co., Ltd.
Renamed the sales company to 'Sumitomo Heavy Machinery Construction Machinery Sales Co., Ltd.'
Opened the Aichi Training Center.
Renamed the sales company to 'Sumitomo Heavy Machinery Construction Machinery Co., Ltd.'
Opened the Chiba Training Center.
Split the construction machinery business headquarters of Sumitomo Heavy Machinery Industries Co., Ltd. and established Sumitomo Construction Machinery Co., Ltd.
Sumitomo Construction Machinery Co., Ltd. merged the sales company and Sumitomo Heavy Machinery Construction Machinery Co., Ltd., becoming a dedicated construction machinery company with integrated manufacturing and sales.
Split Sumitomo Construction Machinery Co., Ltd. and Sumitomo Construction Machinery Sales Co., Ltd.
Opened the Chiba Training Center.
Opened Osaka Driving School.
Opened ICT Driving School in Nagoya.
Acquired and merged with SK Ishishou Co., Ltd.
Acquired and merged with Osaka Sumishiro Construction Co., Ltd.
Sumitomo Construction Machinery Sales Co., Ltd. requests compliance with the weight, dimensions, and transportation conditions stipulated by the Road Traffic Act Enforcement Order during heavy machinery transportation. It publishes weight charts for hydraulic excavators and road machinery and recommends on-site verification. Employees will speak to any overloaded vehicles they discover.