Global copper use contributes to the backbone of our modern world. - When people think mining, it's often coal and gold that gets all the glory. But the United States is one of the largest producers of copper globally, with mines located in the southwestern region of the country. With copper being a key component in green technology, every ounce our team mines responsibly brings us closer to a more sustainable world. #MinedInAmerica #mining #copper #arizona #heavyequipment #heavyequipmentoperato

Oリング

COOPERベアリング 組付け手順

NKリング製造方法