Company History
Resonac (former Showa Denko) HD Media business division started since 1984, the milestone chart below illustrates the development of our individual global divisions until present.
Resonac HD Business
| 2023 Jan | Renamed to Resonac HD and became parts of Resonac Holdings Corporation and Resonac Corporation, integrating Showa Denko K.K and Showa Denko Materials Co.,Ltd. |
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Former Showa Denko HD Business
| 1984 Sep | Started Research & Development |
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| 1987 Jul | Installed Semi-commercial line at Kawasaki Works |
| 1988 Mar | Shipped first batch of products to customer |
| 1989 Nov | Built Production Facility (Building-A) in Ichihara, Japan |
| 1991 Dec | Completed Building B in Ichihara, Japan |
| 1996 Oct | Completed Building C in Ichihara, Japan |
| 1997 Oct | Established Showa Denko HD (Malaysia) Sdn. Bhd. |
| 2001 Mar | Combined Aluminum substrate business by merger with Showa Aluminum Corporation |
| 2002 Nov | Established Showa Denko HD Singapore Pte. Ltd. |
| 2003 Jul | Allied with Trace in Aluminum media |
| 2004 Jul | Established Showa Denko HD Trace Corporation |
| 2005 Jul | Started mass production of perpendicular magnetic recording hard disks first in the world |
| 2006 Jun | Completed R&D Building in Ichihara, Japan Started commercial production of 2.5-inch HD media with storage capacity of 100 GB per disk |
| 2006 Nov | Completed new plant in Singapore |
| 2009 Jun | Integrated the HD business of Fujitsu Limited and established Showa Denko HD Yamagata KK |
| 2010 Apr | Phase II expansion in Singapore Facility |
| 2011 Jul | Phase II expansion in Singapore |
| 2014 Jul | Showa Denko HD Malaysia become wholly owned subsidiary company of Showa Denko HD Singapore |
| 2015 Jan | Incorporated Oyama Plant into Showa Denko HD Yamagata |
| 2019 Jan | SDK’s 3.5-inch Media Now Used in World’s-Largest-Capacity 16TB HDD |
| 2021 Feb | Installation of new equipment at new substrates facility to increase current output by about one third starting from the first half of 2022 so to expand the aluminum HDD media production capacities |
| 2021 Dec | Developed HD Media for MAS-MAMR Technology |
| 2022 May | Starts Shipment of Newly Developed HD Media for Record-breaking 26TB Near-line HDD |