Shandong Tiansheng Machinery Science and Technology Co..ltd, a privateenterprise specializing in developing, selling and producing the agriculturalmachinery, is one of the drafter of the industry standard of the disc harrow andshare plough in China,which is China's outstanding agricultural expert, we haveself-supported import and export right, In July 2006, 0ur company has winedthree patent technology and passed lS09001 quality management systemcertification.