All-round polishing material manufacturer, Koyo-Sha Co., Ltd.

KOYO

Koyo

Dec. 5, 2024 (Thu)

Dec. 28, 2024 (Sat) ~ Jan. 5, 2025 (Sun)
Our winter holiday

Jul. 17, 2024 (Wed)

Aug.10,2024(Sat) ~ Aug.15,2024(Thu)
Our summer holiday

Feb. 15, 2024 (Thu)

A Product Demonstration Video
"Vol. 18 A Polishing Titanium (Item: A Silver Spoon)"
Has Been Uploaded.

May. 10, 2023 (Wed)

A Product Demonstration Video
"Vol.17 Polishing with NEW SUNLITE for Copper-Brass (Material: Buddhist objects)"
Has Been Uploaded.

Apr. 6, 2023 (Thu)

A Product Demonstration Video
"Vol. 16 A Polishing Process of Precious Metals (Item: A Silver Spoon)"
Has Been Uploaded.

Oct. 1, 2021 (Fri)

Chinese website is now available.
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New Products