NGK Laser Iridium plugs

Nor would I. As with US products, you get what you pay for. China is perfectly capable of turning out very high quality products, but they expect to be paid for the trouble. The problem is that a lot of US importers want to spend 3 cents per socket wrench and then sell them for $10 each, which is going to require any factory, Chinese or otherwise, to cut a lot of corners.