Shandong Weituo Group Co., Ltd. (hereinafter called SWT) including ten sub-works is a state owned, large scale and first class enterprise appointed by state with five thousand workers and staff. It is loacated in urban district of Weifang city, Shandong province, where Qingdao is in the east and Jinan is in the west, with very convenient transportation and good geographic location.WT is the creator of small-size 4-wheel tractor. Through more than forty years development its scale has been getting larger and larger and its has been well equipped continuously. Its main products are Weituo brand products including model TS12-24, TS180D-240D, TY180-TY300, Alland360-464, SWT850-854 series tractor and matched farm implements. Its annual output reaches two hundred thousand sets. Weituo brand tractor earned the only top state silver medal among Chinese same products as the first brand among the industry in China, gained the title of "the famous brand of Chinese Technical Products", and also he title "Chinese Iternational Agricultural Industry Exhibition Famous Products". Weituo trademark is only listed in "List of National Key Protected Trademark" among the small-size 4-wheel trator industry. SWT has first passed the Quanlity System Certification of ISO9001 among the smae industry in China and has its own right of import and export. Its products are not only sold to 24 provinces but also exporteto over thirty countries regions. At present, it has become the biggest production base of small-size 4-wheel tractors in China that its annual output and sacles amount of the main products is among the best of successful candidates in China and its social possession of "WEITUO" brand tractors has already topped 1,500,000 sets. On the bases of consummating and extending the big, middle and small power tractors and inside combination and searches coperation projects actively. At present, it has been researching and manufacturing, rice and wheat combin