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