GmbH (Gesellschaft mit beschränkter Haftung) Sàrl (Société à responsabilité limitée) Sagl (Società a garanzia limitata) ≈ Ltd. (UK), LLC (US). Min. capital CHF 20,000. Registered shares only, of a par value of min. CHF 100 each. Name, address and share of each owner (and any changes) publicly recorded in the Official Register of Commerce.
On the other hand, if you are not responsible for its tax, then you should declare the equipment in Part III of the Business Property Statement (Equipment belonging to others). Where equipment is declared in Part III of the Business Property Statement, the Assessor will also send a Notice to File to the person reported as the equipment's actual owner.