ETC DRAG CHAIN WHEEL 제품명 DRAG CHAIN WHEEL 규격 작업내용 DRAG CHAIN WHEEL MANUFACTURE 목록으로 상세내용 1. Material 2. Normalizing Heat Treatment 3. Rough Lathe Work 4. Hole & Tap Hole Boring Work 5. Induction Heat Treatment 6. Hole & Tap Hole Boring Work 7. Fine Lathe Work 8. Rust control, Painting, and Packaging