Preparation were started in sep . 1996 for the construction of Zhengbang Corporation, which went into operation in March , 1997 . It Introduces advanced foreign facilities and manufacturing technology including granulators & cultivating machines of American CPM Corporation . It's signed a long-term contract of technological cooperation with China's Academy of Sciences of Agriculture . Which actively introducing and abosorbing advanced formaula technology from home and abroad , it makes use of the local situation and develops more than loo kinds of qualified forage with high scientific and technological content . It produces as many as 5 lists of feed with Zhengbang's characteristics including forage of pigs , chickens , ducks and aquatic products as well as special agriculture . As a result , it has been welcome by most culturers , especially since it put on market forage of pigs , chickens , ducks and other young stockes