Student or Learner
4320 pcs are out of 32000 pcs order and will be ready for inspection on July 15.
As per our meeting with Mr. Liu last time, we should set up some document to identify the testing time for each catalogue. Did him told you to prepare? We need send this report to the auditor, please send it to me ASAP.
For the sentence no. 2, why is use 'Re', but not 'Per'?
I read the sentence as meaning that "with reference to", rather than "as a result of".
You may mean the second, in which case "Per our last meeting..." is what I would write.