ホタテ貝殻配合チョークを作るプロセス。粉の飛散が少ないダストレスチョークを１日２０万本の大量生産！日本一のチョーク工場。
The process of making chalk from Japanese seashell powder. Japan's largest chalk factory. 👁 Japan Physical and Chemical Industry Co., Ltd. ☎️ TEL: 044-811-4121 🏠https://www.rikagaku.co.jp/ 🚩https://goo.gl/maps/rRqXk6AUtbrvNMKc8 💌 Contact us: [email protected] 📸 Copyright(C) 2022. Processx. all rights reserved.
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Process of making colored balls.Japan's unique factory mass-produces exclusively colored PVC balls.
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[Scallop waste problem] Shells are reborn as "classroom chalk"! A look behind the scenes at a fac...
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The process of mass-producing chalk. Made-in-Japan chalk that everyone has used.
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