Ningbo BaoSi Energy Equipment Co., Ltd. is a China-based company principally engaged in the research and development, manufacture and sales of compressor products, cutting tool products, precision transmission parts and pump products. Its compressor products mainly include screw host machines and screw compressor whole machines. Its cutting tool products mainly include standard cutting tools, non-standard cutting tools and grinding services. Its precision transmission parts mainly include worm shaft, screw shaft and ordinary motor shaft. Its products are widely used in petroleum extraction, oil refining, coal mine and biomass fuel gas extraction and recovery.