德国采购需求：超声波换能器、超声波换能器、超声波换能器、超声波换能器探头、西门子超声波机、超声波治疗机

I'm looking to purchase a specific circuit board and would appreciate it if you could send me a detailed quotation. Please include the unit price in EUR or USD, along with the warranty period you offer. Additionally, I need information on shipping conditions to Germany, specifically the associated costs and estimated delivery time. Moreover, I'd like to know the customs and import requirements for shipments heading to Germany. Could you also provide your payment terms and confirm the availability of the product? Looking forward to your prompt response.