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Shandong Lingong Machinery Co., Ltd., was founded in 1972 and is one of China's leading manufacturers of construction equipment, which it markets under the SDLG brand name. View More · SDLG Excavator. US $154,200 165,000 · Wheel Loader. US $24,000 32,000. SDLG Grader. US $69,700 82,000. Sany Group Co.Live Chat