Whenever a companies opens a new product line, there are bound to be issues until a run or two have been made. Under the best conditions, the company does this internally and does not release it's product until they have reached their goal - hopefully six-sigma.
The trouble is economy of scale, you have to build many, many pieces to break even after paying for R&D, testing, et cetera.
How many amps do they sell a year?
In the 1960s Datsun/Nissan and Toyota were cheap POS.
Beringer is still manufacturing inexpensive stuff, but I have noticed their build quality improving.