Even if they show a decent test, it really means virtually nothing when you consider that:
a) Qingdao don't do batch numbers, so you have no idea what you're getting. Is it from the batch that allegedly tested well? Was that test a ringer? Is it from a 2 year old oil drum they just found in a corner? You just don't know.
...and...
b) They've been caught lying multiple times, photoshopping a fake lobby to their non-existent factory, faking lab tests, etc.
f you're still wiling to roll the dice to save a buck, that's on you, but you'll never silence those of us that care about quality and safety.