How to tell if a disposable soup cup is qualified?

1. Asking for manufacturers for ISO9001 Certificate.

2. Checking testing reports of FDA, or CE, or Regulation EC No1935/2004 etc.

3. Testing reports of paper raw material. (2 or 3 choosable)

4. We, as the producers of kraft soup containers, we will do testing by oil, sauce, hot coffee, for 3 hours, see if any leakage.

5. Checking each piece of bottom see if it is sturdy.