3D & Druck

* Constraint 4: Maintain similar character count (±20 characters).

* Constraint 5: Output Only the numbered translated titles. No preamble or postamble.

* *Source 1:* 5015 5V Blower Fan 50*50*15mm Dual-ball Turbo Cooling Fan for MK3S+ 3D Printer Cooler Radiator Low Noise

* Item 2: "1Pcs Mini Folding Neck Hanging Reading Glasses Portable Lanyard Necklace Comfortable Anti-blue Light Presbyopia Glasses"