| Company name | Reg. code |
|---|---|
| ALOTECH OÜ | 17191041 |
| ALOTEK OÜ | 10826014 |
| ALTOTECH OÜ | 11263464 |
| ALLTECH OÜ | 10910944 |
| ALPTECH OÜ | 16921179 |
| APLOTECH OÜ | 14604894 |
| CLOTECH OÜ | 14095085 |
| ALOTEX PLUS OÜ kustutatud (former name Alotex Plus UÜ) | 12938289 |
| ALGOTECH TRADE OÜ | 16998638 |
| ALLTECH EESTI OÜ | 11076868 |
| ELECTRIC ALUTECH OÜ kustutatud | 16018002 |
| ALGOTECH HOLDING OÜ | 16327967 |
| DIOTECH OÜ | 12672325 |
| ECOTECH OÜ kustutatud | 10692513 |
| AEROTECH OÜ | 12158261 |
| ECOTECH OÜ (former name Werrowool Technologies OÜ) | 14093117 |
| ALTOUCH OÜ kustutatud | 12816296 |
| ANDTECH OÜ | 16161076 |
| AFFTECH OÜ kustutatud | 16087919 |
| AIKOTECH OÜ | 17129554 |
| AVEOTECH OÜ | 16565098 |
| ANATECH OÜ | 17248081 |
| ALEXTECH OÜ | 16640641 |
| AXONTECH OÜ | 17430331 |
| AMETECH OÜ | 14022034 |
| AIXTECH OÜ | 16601823 |
| BALTECH OÜ | 16532839 |
| ALAZTECH OÜ | 17076250 |
| ALFATECH OÜ | 11117691 |
| ALVETECH OÜ (former name FacadeFit OÜ) | 12771872 |
| CAMOTECH OÜ | 14131450 |
| BALCOTECH OÜ | 17354558 |
| ARBOTECH OÜ | 17287939 |
| BIOTECH OÜ | 12632219 |
| AGETECH OÜ | 14634375 |
| ELETECH OÜ | 16723628 |
| ALARTECH OÜ | 16971036 |
| AIRTECH OÜ | 11371165 |
| ALBATECH OÜ | 17075054 |
| DAGOTECH OÜ | 17063996 |
| GLOTECH IT SOLUTIONS OÜ | 17047945 |
| ECOTECH SOLUTIONS OÜ | 17181141 |
| AEROTECH SERVICES OÜ | 16724970 |
| BTB AEROTECH OÜ | 16584351 |
| ECOTECH DEVELOPMENTS OÜ | 14811564 |
| RMA BIOTECH OÜ | 14787682 |
| VILLEMAN BIOTECH OÜ kustutatud | 12918217 |
| ARCTIC BIOTECH OÜ | 17282468 |
| AGROTECH BALTIC OÜ kustutatud | 16674048 |
| LONGEVITY BIOTECH OÜ | 16723870 |