Replying to [HelenJollee]:
We know buyers deal with china suppliers because of prices, and some suppliers have better quality than others, it's upto the buyer to know this as they will sell in the market area.
Buyers can ask for better quality parts in some cases, but the cost would increase and so this option is not used all the time.
But the seller needs to give the customer better customer service as chinese quality gets bad feedback from the sales and because the seller do not privide help to them