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| DENSO (THAILAND) CO.,LTD. |
| JTEKT (THAILAND) CO., LTD. |
| MINEBEA ACCESS SOLUTIONS THAI LTD. |
| MITSUBISHI ELECTRIC CONSUMER PRODUCTS (THAILAND) CO., LTD. |
| MURAKAMI MANUFACTURING (THAILAND) CO.,LTD. |
| NIDEC MOBILITY (THAILAND) CO., LTD. |
| NIKON CORPORATION |
| OKI DATA MANUFACTURING (THAILAND) CO., LTD. |
| PANASONIC AUTOMOTIVE SYSTEMS ASIA PACIFIC CO.,LTD. |
| RESONAC AUTOMOTIVE PRODUCTS (THAILAND) CO., LTD. |
| SIAM AISIN CO.,LTD. |
| THAI ARROW PRODUCTS CO.,LTD. |
| THAI KOITO COMPANY LIMITED |
| THAI HONDA CO.,LTD. |
| YAMADA SOMBOON CO., LTD. |
