| Ettevõtte nimi | Reg. kood |
|---|---|
| MYSTEEL OÜ | 14184481 |
| MYSTERY TECH OÜ | 16176764 |
| MYSTERY GROUP OÜ | 10416523 |
| ROYAL MYSTERY OÜ | 16207453 |
| MYSEL OÜ | 16066722 |
| MAGICAL MYSTERY COMPANY OÜ | 16890970 |
| MYSTERY GROUP TA OÜ | 12579057 |
| MYSTE BUFFO OÜ kustutatud | 10534599 |
| TERAAPIAKESKUS OÜ (endine nimi Mystial OÜ) | 16606615 |
| GYOKKON BUNGZUNG OÜ (endine nimi Mystery Consult OÜ) | 16780448 |
| MESTTEL OÜ | 16827061 |
| OISTEEL OÜ | 17129436 |
| GYPSTEEL OÜ kustutatud | 11359796 |
| ESTEEL OÜ (endine nimi Scandinavian Rent OÜ) | 14451404 |
| SYSTEEM AZUR OÜ | 16816614 |
| SSSTEEL TRADE OÜ | 16926969 |
| SYSTEEM PLEKK OÜ kustutatud | 10202294 |
| GOSTEEL OÜ UÜ kustutatud (endine nimi GoSteel UÜ) | 12024247 |
| STEEL OÜ | 14225524 |
| ESTEEL PROJECT OÜ | 12240040 |
| XSTEEL INTERNATIONAL OÜ | 12877582 |
| DYSTEE COMMERCE OÜ kustutatud | 16320830 |
| STEEL BUCKLE OÜ | 16060820 |
| PLEKK & STEEL OÜ | 14450422 |
| MARVE STEEL OÜ | 14687377 |
| STEEL CUBE OÜ | 16962936 |
| FOREST STEEL OÜ (endine nimi O&O Holding OÜ) | 11242516 |
| MAGNUM STEEL OÜ | 11726444 |
| RR STEEL OÜ | 14106357 |
| DAN-STEEL OÜ (endine nimi OÜ VOGAN) | 11405763 |
| STEEL SERVICE OÜ | 11900095 |
| INNOVATIVE STEEL OÜ | 17192021 |
| STEEL MINDS OÜ | 17505690 |
| HAPPY STEEL OÜ (endine nimi Donna & Jan Baltora OÜ) | 12681293 |
| VESTA STEEL OÜ (endine nimi Car Friend OÜ) | 12512797 |
| TMT-STEEL OÜ | 14337690 |
| STEEL CRAFTS OÜ (endine nimi Centurion Welding OÜ) | 12316524 |
| STEEL GEAR OÜ | 17381087 |
| SPI STEEL OÜ | 17441636 |
| STEEL STUDIO OÜ | 16089628 |
| SOLID STEEL OÜ | 17484960 |
| ZNL STEEL OÜ | 10906285 |
| YANA STEEL OÜ | 17352298 |
| RV STEEL OÜ (endine nimi Iru Parkla OÜ) | 12979228 |
| SAARE STEEL OÜ | 14304488 |
| STEEL SOLUTIONS OÜ | 14359093 |
| EV-STEEL OÜ | 12158445 |
| STEEL EQUIPMENT OÜ (endine nimi Weld IWE OÜ) | 12792360 |
| VIRU STEEL OÜ | 12967523 |
| NV STEEL OÜ | 10855932 |