DG Ridong Ultrasonic Machinery Co., Ltd,was established in 2007,located in the beautiful Fenggang Town of Dongguan with extremely convenient traffic, our factory area of 4,600 square meters,currently employees of 70 staff, including 4 designing engineers,4 R&D engineers and 14 other engineers.With many new and old customer\'s support,our company has gradually become professional and powerful.