derma roller for skin care anti-aging treatment micro roller skin roller 0.2mm,0.5mm,1.0mm,1.5mm,2.0mm Microneedle informations: 1.We have two kinds of microneedle: titanium alloy needle and stainless steel needle. 2.The length of needle have 0.2mm,0.5mm,1.0mm,1.5mm,2.0mm. 3.standard export paper packing.Theory of Microneedle Therpy: Microneedle therapy uses a knead rod inlayed with 192 slender ...