The Chinese are capable of manufacturing to high quality standards if it makes good business sense for them to do so.
They also make a lot of absolute junk that has a high failure rate.
For example.... rechargeable battery packs.
They can sell them for such a low price that Americans can buy 4 of them[direct from importers] for the same price you would pay at the store. If 1 or 2 packs out of the batch of 4 fail ...the American consumer still feels like he came out ahead.
Have the Chinese infiltrated the USA gun market much...?