yes, I've received your previous email and I've already informed about possibility of this problem.
If ATMS send this chain to re-assembly or plating to out sourcing then possibility as follows :
- when assemble the chain it is too long exposed by the torch. It will damage the soldering powder between the link. Remember, chains ordered by ATMS ( also in the video ) is the small size chain
- even after assemble the chain still looks good, but when they start plating process they will use acid chemical to clean the chain surface and to prepare plating process. This is give additional damage to soldering powder and once again this is a small size chain. If their out source supplier exposed our chain into many acid chemical ( which we don't know what kind of ) then it can explain why the chain is very easy to break out.
These 2 point are the major problem that I can explain to you that probably caused this problem with ATMS.
I hope this can be clear enough for you. Please feel free to ask if you still have further question