combination sale,it is more cost-efficient.one set is only $300.
if you like,please contact with me:https://www.aliexpress.com/store/pro...612.0.0.jO6dLK.
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the assemble video for the printer: https://www.youtube.com/playlist?lis...GCpVBmjXTrJXUg
the adjustment video for the scanner:https://www.youtube.com/watch?v=jTD-B_4s2-o