美国采购需求：折叠轮椅，折叠式轮椅，助行轮椅，旅行轮椅，成人步态训练器，步态装置

I'm reaching out to clarify the payment structure for our potential collaboration. Specifically, I'd like to know if the payment is calculated on a daily basis. It's important for us to understand how the pricing works as we evaluate the financial aspects of this partnership. Could you please provide more details on your payment terms? It would be helpful to understand if there are any specific conditions or thresholds that apply when determining daily rates. This info will assist us in making an informed decision moving forward. Looking forward to your response!