Not bad. Linyi Yisheng Engineering Machinery Factory has passed ISO9002, VDA6.1, QS9000, ISO/TS16949 and other quality system certifications and ISO14001, OHSAS18001 environmental and occupational health and safety system certifications. Its product quality is guaranteed; it provides a diversified product line covering various industries. A variety of engineering machinery and equipment, such as excavators, loaders, bulldozers, etc., to meet the needs of different customers.