Aha ,i have found a great tool to convert dwg dxf files. :)

it is so powerfull.
it can convert dwg/dxf to images file and also convert it to vector files such as EMF,PDF.
Try it free at http://www.dwgconverter.com

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
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