For 3D drawing, we would prefer in X_T, STEP, IGS or STP format. For 2D drawing, we would like the drawing to be annotated with the required tolerance if possible. Please put all files into one folder and compress the folder into a ZIP or RAP file before uploading(Max 100MB). For attachments over 100MB, please send it to

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+86 180-2549-6795


+86 755-2937-9771



No.38, Block B, Sanhe House, Longgang Street, Longgang District, Shenzhen China

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