Three numbers are enough to start: what you store, what temperature, and how much per day. Everything else we can work out together.
Four fields are enough to come back with a selection and an indicative price.
Depends on size and whether panels and units run in parallel. We give a schedule with the drawing — and we do not promise dates we cannot hold.
Yes, for projects where installation and commissioning are part of the scope. We discuss supervision, crew and local requirements case by case.
For projects: T/T with a deposit, or an irrevocable L/C at sight. For single units and spare parts: payment in full before dispatch, or through an international payment service — ask us what works in your country. Currency is normally US dollars; where a local-currency platform is simpler for you, raise it at quotation stage. Terms are written into the contract, not agreed verbally.