Hirschmann Industrial Network Specialist (HiNS)
| Name | Company | Date | Last Renewed |
| Rerksamret, Wittaya | Masstron (Thailand) Co.,Ltd. | 18.07.2008 |
Hirschmann Industrial Technology Professional (HiTP)
| Name | Company | Date | Last Renewed |
| Rerksamret, Wittaya | Masstron (Thailand) Co.,Ltd. | 28.07.2008 |
Hirschmann Industrial Design Professional (HiDP)
| Name | Company | Date | Last Renewed |
| Rerksamret, Wittaya | Masstron (Thailand) Co.,Ltd. | 30.07.2008 |
Hirschmann Industrial Network Engineer (HiNE)
| Name | Company | Date | Last Renewed |
| Rerksamret, Wittaya | Masstron (Thailand) Co.,Ltd. | 30.07.2008 |