To optimize costs, categorize parts into 'Fast-Moving' (filters, belts, brake pads) and 'Slow-Moving' (engine blocks, body shells). For fast-moving items, negotiate bulk discounts (typically 10-20% off) for orders exceeding 500 units. For expensive, low-turnover items, seek suppliers on Made-in-China.com who offer Low MOQ (Minimum Order Quantity) options or 'Consolidated Shipping' where multiple part types are packed into a single container to reduce the Total Cost of Ownership (TCO) and minimize port handling fees.