Use when a mechanical engineering drawing, CAD drawing, SolidWorks drawing, DXF, DWG, PDF, screenshot, scan, reference image, or existing CAD output must be copied, imitated, matched, traced, replicated, or kept visually close to a supplied reference, including jixie zhitu, gongcheng zhitu, zhuangpei tu, lingjian tu, cankao tu, zhao zhe hua, yiyang, xiangsi, mofang, fuke, tiejin, or bu xiang.
