Ball bearing Our products include: 7004-7030, 7204-7230, 7304-7320 classified with A, AC, B We are the professional manufacturer of producing those bearings. Built: 2001 The staff: Approximately 200 Quality: Good and steady quality with ISO9001: 2008 Products: Deep groove ball bearings, angular contact ball bearings, steel ball Materials: Chrome steel. Advatage: Good quality and the low price If you are interested in our products, pls feel free to contact us. We will give the best price.