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 part 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 (SHDI) |
| 1991 Dec | Completed Building B in Ichihara, Japan (SHDI) |
| 1996 Oct | Completed Building C in Ichihara, Japan (SHDI) |
| 1997 Oct | Established Showa Denko HD (Malaysia) Sdn. Bhd. (SHDM) |
| 2001 Mar | Combined Aluminum substrate business by merger with Showa Aluminum Corporation |
| 2002 Nov | Established Showa Denko HD Singapore Pte. Ltd. (SHDS-West) |
| 2003 Jul | Allied with Trace in Aluminum media |
| 2004 Jul | Established Showa Denko HD Trace Corporation (SHDT) |
| 2005 Jul | Started mass production of perpendicular magnetic recording hard disks first in the world |
| 2006 Jun | Completed R&D Building in Ichihara, Japan (SHDI) Started commercial production of 2.5-inch HD media with storage capacity of 100 GB per disk |
| 2006 Nov | Completed new plant in Singapore (SHDS-East) |
| 2009 Jun | Integrated the HD business of Fujitsu Limited and established Showa Denko HD Yamagata KK (SHDY) |
| 2011 Jul | Phase II expansion in Singapore (SHDS) |
| 2014 Jul | SHDM become wholly owned subsidiary company of SHDS |
| 2015 Jan | Incorporated Oyama Plant into SHDY |
| 2019 Jan | SDK’s 3.5-inch Media Now Used in World’s-Largest-Capacity 16TB HDD |
| 2021 Feb | Increased substrate manufacturing capacity to support expansion of HDD Aluminium media production |
| 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 |