smallest printer in the world

{"cid":"91184025","title":"Smallest Metal 3D Printer Fast Turn Over With High - Accuracy Galvo Scanning System","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/1e\/0c\/b108c8b3565618dcefb0296271e3-200x200-1.jpg","attrs":{"Price":"USD","Brand Name":"Riselaser","Model Number":"RL-M50","Minimum Order Quantity":"1 SET","Delivery Time":"5-9 working days","Certification":"ISO9001:2008, CE, FDA","Place of Origin":"Shenzhen, China","Payment Terms":"Western Union, MoneyGram, T\/T","Supply Ability":"2000 units\/ month","Packaging Details":"Wooden Case","Product name":"World Smallest Metal 3D Printer for Different Kinds of Metal Material","Laser power":"70W 200W 500W (Optional)","Building volume":"50*50mm","Precision optics":"high-accuracy galvo scanning system","Scanning speed":"up to 7m\/s","Layer thickness":"0.02mm-0.1mm","Power delivery":"one way - double powder tanks"}}