https://www.haiyanlc.com/product/double-headed-wood-screw/ Longcheng upholds the tenet of "creating Longcheng brand, striving for world famous brand" and the ideal of spreading its wings. He always adheres to the corporate image of "building up a master's posture, building up the perseverance of Longcheng people", and carries out the total quality management with strict standard parts of enterprise quality management mode.