Home › Blog › Buying Guide › From Inspection to Installation: What to Verify Before Buying a Pre-Owned, Used, Secondhand, Surplus Doosan DNM 750L CNC Lathe made in South Korea Here’s a detailed inspection-to-installation checklist tailored for purchasing a used or surplus Doosan (formerly Doosan) DNM 750L (or equivalent large format machining center, made in South Korea) — especially useful given the heavy duty nature, size and complexity of such a machine....