It is the combination for authority, intelligence and utility. It collects more than 38000 manufacturers and dealers for heavy-duty car and machinery construction. It has excellent result from the point of marketing and approval by the industry insiders. It is epitome of the heavy-duty industry and efficient advertisement carrier. It has large circulation, multipurpose, long timeliness, reasonable price and professional distribution object. Comprehensive information helps the important industry insiders to understand related information. They can purchase easily. It is not only our main magazine but also authoritative procurement guides for the business users. It has become the collected book for the industry. It publishes 50000 volumes which is equipped with presented CD.