... as required 3. High precision 7X Microscope eyepiece convergence set for sale in Chengdu 1.This eyepiece convergence set is made of ... , casting and forging parts, assembly service.2.Various Machining Materialsaluminum, copper, brass, stainless steel, alloy steel , bronze, or customer specified3. FinishingAnodizing ... ChenSKYPE: cyd-skyTEL: +86-28-83128852 7X Microscope eyepiece lens for sale in Chengdu