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Legal statement

All the contents on this site www.dtgis.com, including, but not limited to, the words, pictures and diagrams, marks, advertisements, procedures, any or all information provide for the users, are protected by the copyright law of the People's Republic, the PRC trademark law, the PRC patent law and the international convention’s items about the copyright, trademark right, patent right and other laws about property ownership are owned to the Datum science and technology development Co., LTD.

For non-commercial nonprofit purpose, please use within the scope of the copyright law in order to protect the rights of the author.

Without the clearly written special authorization from Datum science and technology development Co., LTD. no others may issue, reproduced, copy, display or use of the other means tot partial or total use the contents the www.dtgis.com carries, otherwise, we shall treat you as infringement and shall be investigated for legal responsibility.