ＷＹＬ２０Ａ轮式挖掘机是我厂１９９８年自行研制开发的新产品，并于当年１２月通过了鉴定。产品投放市场后，销售形势良好。该产品全部采用国产元件，具有价格优势；但在西部地区用户的使用过程中也暴露出了一些问题，主要是国产元件的可靠性较差，产品配置没有充分考虑西部 The WYL20A wheeled excavator is a new product developed by our factory in 1998 and passed the appraisal in December of that year. After the products were put on the market, the sales situation was good. This product uses domestically produced components and has a price advantage. However, it also exposed some problems in the use of users in the western region. The main reason is that the reliability of domestic components is poor and the product configuration has not fully taken into consideration the western region.