FULL RANGE OF MTZ TRACTOR PARTS. ENGINE PARTS, BRAKE PARTS,. Ningbo Wanli Power Machinery Factory, founded in 1980s, is headquartered in Ningbo, Zhejiang Province. With a sound and powerful marketing network in global and Chinese markets, it is a professional manufacturer of automotive engine crankshafts and king pin kits, integrating development, production, sale and service. We have professional equipment, full-time workers and perfect process with the main products including engines crankshafts for Japanese and Korean series light trucks and medium trucks and king pin kits for a varieties of the American and European series