... drawing building and so on ♥Product name:Tracing PaperSulfate paper ,tracing paper quantitive50-220gramsmain53g,63,73g,83g,93g,112g,130g,150g, ... diaphaneity more than 72 degree ♥Description:Tracing paper is a base paper after blueprinting which supplied for artificial link line ... ,machinery,architectural drawing.It is kind of big copy paper, the appearance is grey white transparent..In short,we ...