Series of 7C trailers from 1 to 5 tons manufactured by Shandong Tianchang Machinery Co., Ltd. meet the national standard. It is mainly used for transportation of farming materials and crops in the field. It consists of two series, automatic unloading and non-automatic unloading and automatic unloading consists of side unloading and back unloading. The quality is reliable and loading capacity is big. It is easy to be operated and maintained. Model