Certificate of Membership of IRRIGATION ASSOCIATION
Certificate of ISO 9001:2008
CERTIFICATE OF JP75-300
CERTIFICATE OF DPP-327
CERTIFICATE OF DYP-327
patent for utility models of DYP by State Intellectual Property Office of the People's Republic of China
patent for utility models of towing machine by State Intellectual Property Office of the People's Republic of China
patent for utility models of DPP by State Intellectual Property Office of the People's Republic of China