Can you email me (email in profile) and I can connect you to some people in the US trying to solve this.
It's probably in a procurement regulation or guideline.
The bank can give the mask company money now. Once the American NGO receives the masks, it can directly pay the bank. That way the bank does not have to worry about the mask company stealing its collateral. The bank might even offer to pay for the provision of masks as a donation from China.