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low angle photography of high-rise building

Our Business Partners

The YDK Group has been supported by a large number of highly skilled professionals, manufacturing and development engineers, and researchers who have carried on a tradition spanning more than 110 years. We will continue to meet our customers needs through the YDK Group's advanced technical capabilities and strict quality control.

Hard chrome, zinc, nickel without electrolysis, various types of heat treatment.
Yoshino Denka Kogyo Co., Ltd
(Koshigaya, Saitama Prefecture)
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment
A white industrial building facade in Japan with Yoshino Denka Kogyo signage under a clear blue sky.
A white industrial building facade in Japan with Yoshino Denka Kogyo signage under a clear blue sky.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment
Zinc, copper, nickel, chromium, Sn-Co, blackening treatment.
Yoshida Plating Co., Ltd.
(Komatsu & Kanazawa, Ishikawa Prefecture)
Industrial rotating barrel plating line for metal finishing and electroplating services.
Industrial rotating barrel plating line for metal finishing and electroplating services.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment
Nitto Co., Ltd.
(Fujisawa City, Kanagawa Prefecture)

Car exterior components, nickel-chrome

Aerial view of a large industrial manufacturing plant and warehouse facility with white roofs.
Aerial view of a large industrial manufacturing plant and warehouse facility with white roofs.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Car exterior components, nickel-chrome

Asakura Plating Works Ltd.
(Hamamatsu City, Shizuoka Prefecture)
Industrial warehouse loading dock with workers and stacked plastic crates under a corrugated metal roof.
Industrial warehouse loading dock with workers and stacked plastic crates under a corrugated metal roof.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Heat Treatment

Jomo Metal Industries Co., Ltd.
(Tomioka City, Gunma Prefecture)
Exterior view of a multi-story industrial warehouse building with a paved parking lot.
Exterior view of a multi-story industrial warehouse building with a paved parking lot.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Coating Process

Ito Plating Works Co., Ltd.
(Takasaki City, Gunma Prefecture)
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment
A man welding a piece of metal in a factory
A man welding a piece of metal in a factory
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Heat Treatment

Sanwa Seimitsu Heat Treatment Co., Ltd.
(Ushiku City, Ibaraki Prefecture)
A two-story orange and white warehouse building with cars parked under a metal awning.
A two-story orange and white warehouse building with cars parked under a metal awning.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Nickel, black nickel, non-electrolytic nickel, chromium, zinc, gold, silver, tin, anodizing, chemical polishing, electrolytic polishing, chemical treatment of aluminum.

Sato Denka Kogyo Co., Ltd.
(Hitachinaka City, Ibaraki Prefecture)
A modular industrial cleanroom enclosure with aluminum frames and clear panels in a factory setting.
A modular industrial cleanroom enclosure with aluminum frames and clear panels in a factory setting.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Zinc plating (rack/barrel), cationic electroplating, nickel-chrome.

Yashima Metal Co., Ltd.
(Mizuho City, Gifu Prefecture)
Industrial factory building and warehouse facility with logistics trucks parked in front of a green field.
Industrial factory building and warehouse facility with logistics trucks parked in front of a green field.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Collaboration in training programs and HR development to improve industrial competence.

YDK-Vietnam Co., Ltd.
(Vietnam, Hard Chrome)
A modern two-story industrial warehouse building with a beige facade and large parking area.
A modern two-story industrial warehouse building with a beige facade and large parking area.
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment

Collaboration in training programs and HR development to improve industrial competence.

AI Kogyo Co., Ltd.
(Takasaki City, Gunma Prefecture)
Modern industrial building with large windows and clear sky
Modern industrial building with large windows and clear sky
Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatment.Hard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heat treatmentHard chrome, zinc, nickel without electrolysis, various types of heatnc, nickel without electrolysis, various types of heat treatment
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