Big two sides marking pen made of high-quality plastic, double-headed design, packing quantity is 1000 PCs/piece, big two sides marking pen minimum order quantity is more than 1 piece, wholesale reference price negotiable, suitable for learning, for office use. Big two sides marking pen has three colors: red, black and blue, with various colors and various styles. It can also be customized according to customer requirements, quantity discount. Big two sides marking pen adopts environmentally friendly refill, which is fluent in writing and does not leak ink. It is suitable for learning and recording.