Not specifically torque convertors, but in regards Chinese "lawn machinery"
One of my far too many employments, was in that industry, and we had our own product design made in China. As long as we stayed on top of quality control we had few problems. One of the issues we had originally had was long resolved, when suddenly reared it's head again. Both of us, Director and I could not remember what we had done to resolve it, but 2 am lightbulb and we talked in the morning, remembering it related to belt back width on the drive system (somewhat like a TAV but different). We phoned the people who made the lawn tractors for us.
Conversation went something like Me "Why have you changed back to the old size belts?"
Person in China "Our engineer says there is no problem"
Me, "there is, and you need to use what we specify"
PIC "Engineer say no problem"
Me "How many of our next order is loaded into the 40' container right now?"
PIC "Only 2 to go"
Me "Do you want me to cancel that order right now if you won't change the belts, and remember that we have a contract that you can not sell our designs or product?"
PIC "We will change them all today", "How many replacement belts must we send you".
Another time we were shearing the heads off bolts very easily. Another phone call which raised the discussion of grade of bolts. In this one they told me that they could mark the bolts however we wanted, grade6, 12.2 or whatever. No, we just want that you USE the right grade.
Bottom line, it's always a chance it won't be what you wanted, but was usually resolved if we stayed on top of things, they will drift to cheap given a chance.
