Dec. 27, a world class automatic product line of railway van bearing was finished in ZWZ. Railway bearing was the major products of ZWZ. In order to implement linearization, automatization, informatization, standardization and antipollution, ZWZ carried out a series of reform and introduced the top class automatic milling processing and bearing assembling lines from Japan. Experiencing such reform, ZWZ has become the leading enterprise in the area of railway bearing production.