product model：pm137c ink color：yellow, red, orange, pink, dark blue, blue, light green, purple, brown, black pen specification：bold+medium nibs product packaging ：1pc/blister, 20pcs/middle box, 320pcs/outer carton
product model：pm137c ink color：yellow, red, orange, yellow, pink, dark blue, blue, light green, purple, brown, black pen specification：bold+medium nibs product packaging ：1pc/blister, 20pcs/middle box, 320pcs/outer carton
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