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This is to certify that your paper entitled «The Effect of tool rotational and travel speed and addition of Fe powder on microstructure and mechanical properties of commercial pure aluminum joint» was indexed with 1 pages, in the CIVILICA citation database, code COI:INCWI22_114, after evaluation and approval of the referees of the "4th International Conference on Welding and Non Destructive Testing & 22nd National Conference on Welding & Inspection & 11th National Conference on NDT held in Isfahan 2022.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.