Changchun Doris Trading Co.,Ltd was specialized in 3D printing pen, drone and other electric products. We have efficient production team, according to the customer&＃39;s require, provide regular/qualified products. We are devoted to offering reliable quality and fashionable styles for customers from all over the world. Besides, the competitive price and perfect after-sales service are our Features too . Adhering to the management principle of "Ensure the best quality, maintaining a reputation ", insist on "customer first" principle to serve our clients. We sincerely welcome the oversea buyers to order our products or request OEM service, we definitely will do our best to serve you! Look forward to your inquiries.