Company Information
Activities
DJK’s main activities are below services related to polymeric materials and composite materials.- Synthesis, polymerization, and reforming action.
- Compounding, molding, and processing samples.
- Material testing, physical properties measurement, and analyzing.
- Defect analysis of products.
- Applying and testing various standard test (FDA/EPA, CSA, etc).
Company Overview
| Company Name | DJK Corporation |
|---|---|
| Company Address | 2-7-17 Shinyokohama, Kouhoku-ku, Yokohama, 222-0033 Japan |
| Date Founded | December, 1981 |
| Capital | 100 Million Yen |
| President | Toshinori Iwai |
| Number of Employees | 120 |
Information of December, 2023
Company History
| February 1964 | Dainihon Jyushi Kenkyujyo (now Advanced Materials Research Laboratory) established |
|---|---|
| July 1971 | Oversea section of Dainihon Jyushi Kenkyujyo has been separated and becomes DJK International Corporation (now Shin-Yokohama Office) |
| December 1981 | DJK Research Center (now Polymer Testing Laboratory) established |
| February 2001 | Dainihon Jyushi Kenkyujyo changes company name to DJK Kenkyujyo |
| November 2003 | DJK Kenkyujyo moves to Tsuzuki-ku, Yokohama |
| September 2004 | DJK Research Center and DJK Kenkyujyo merged to form DJK Corporation |
| December 2005 | DJK Corporation and DJK International merged |
| June 2009 | New laboratory building completed in Chiba Technical Center |
| December 2013 | Capital increase to 100 Million Yen |
| October 2014 | Nagoya Laboratories established |
| October 2016 | Polymer Processing Technology Laboratory established |
| February 2019 | Headquarter relocated in Kouhoku-ku, Yokohama |
| November 2019 | Shin-Yokohama Office relocated in Kouhoku-ku, Yokohama |
| July 2022 | Central Laboratory established |
| December 2022 | Polymer Fusion Technology Laboratory relocated in Moriyama-ku, Nagoya |
Quality Control Activity
*ISO 9001 certification was returned back on March 31, 2023| Office | Polymer Testing Laboratory (Chiba) |
|---|---|
| Registered Number | RTL01110 |
| Examining Authority | Japan Accreditation Board |
| Registered Date | June 2002 |
| Testing Category | Mechanical properties of polymeric materials (tensile strength and combustion test) |
| Office | Advanced Materials Research Laboratory (Yokohama) |
|---|---|
| Registered Number | RTL02820 |
| Examining Authority | Japan Accreditation Board |
| Registered Date | March 2009 |
| Testing Category | Chemical testing of polymer materials (IC method/T-Br, volumetric analysis/ epoxy equivalent/ total amine value) |