Engineering plastic bearings and plastic joint bearings achieve permanent maintenance free outdoor operation of aircraft actuators. They have strong comprehensive processing capabilities, maintenance free, self-lubricating, high and low temperature resistance, wear resistance, impurity resistance, dirt resistance, low noise, quiet operation, high load, and other characteristics, which are very suitable for various equipment in flight equipment. Renimoshen provides polymer engineering plastic sliding bushings, bearings, various shafts, linear guides, circular guide systems, and more with these characteristics.