The plastic wafer patch ring is made of high quality and durable pps material. The product has excellent high temperature resistance and can withstand high temperature baking at 110 °C. It has good steel and corrosion resistance. The cost performance of plastic wafer patch is much higher than that of stainless steel. Its light weight and durability are favored by the majority of semiconductor companies. At the same time, we can customize plastic rings or square rings of various sizes according to requirements.