This is what good insurance is used to cover. Having operated a business that sourced goods from China, your story is not surprising. I've had materials held ho

This is what good insurance is used to cover. Having operated a business that sourced goods from China, your story is not surprising. I've had materials held hostage at customs because they wanted an upfront, wired payment. In my experience, Chinese manufacturers have very little incentive or desire to provide credit or terms of any kind. They also have little desire to problem-solve issues or defects. So, it's no surprise that your problem is (according to them), your problem. I don't know if there is even a Chinese equivalent to the saying "the customer is always right".