1. As I mentioned many times, the bond is one of condition for your payment. We don’t receive bond, and it means you don’t meet the payment condition. After we receive the bond, your invoice will be effected, and will be counted the 30 days in accordance with PO.
Therefore, I recommend you to submit the bond urgently with the amount to cover all remain contract price.
(Your last invoice also have being hold due to the bond)