Taiwan electronics are actually the best and have been used in everything in USA and world since the 70's. They are the biggest chip maker in the world , that why China wants to take them over. You can use a cheap diode or good diode, thin or thick circuit board, etc and this will effect price ..oh and good luck on any warranty on the China/Amazon parts. There is a difference in aftermarket and knock off products. I am a Serria dealer and use their parts regularly for several reasons. 1) they work out of the box. 2) most parts have a useful life warranty and they will replace part/s an pay me if it fails 3) they will pay if parts cause additional damages . 4) part has to be installed by dealer/installer not a DIY. Your engine pistons are made overseas guess where? Taiwan! Art piston supplies and makes pistons for: Yamaha, Suzuki, Yanmar, Ford, Mitsubishi and Toyota is just a few. Also it is the WSM supplier which is best cast piston on the market. If ya want to use it go for it but I wont! Have to good a reputation to screw it up by trying to save a buck