... designed & produced ourselves 3.Patent No.2009201302836 4.CE ROHS cube puzzle penYabin Gift Production Co.,Ltd, which have been designing and ... have variours kinds of advertising pen, such as the exclusive Puzzle Pen, PDA handwritingPen, Multi-color Pen and Modification Fluid Pen ... customers; 4.There is a hanging cord on the Round Puzzle Pen makes it more convenience.Features:--Mateial: AS,ABS.-- ...