- Evaluation of string instruments

- Restoration of old and damaged instruments

- Varnish changing

- Bow rehairing

- Cleaning and polishing of instruments

- Custom made chinrests

- Cleaning and replacing of fingerboard

- Changing of keys

- Changing of tail piece

- Changing of tail spike

- Changing of sound post

- Changing of base bar

- Changing of nuts

- Installing of "pick up"

- Changing of the menzura