| Name | : Rakennusporras rp oy |
| Business Number | : 0968734-7 |
| Category | : Limited Company |
| Primary language | : Finnish |
| Place of taxation | : Varkaus  | Date of registration | : 01-06-1994 |
| Activity | : Construction of residential and non-residential buildings |
| Alias | : Extramark Oy |