Understanding the true factory cost of a vacuum compression bag is the single most valuable piece of information for any B2B importer. It transforms you from a price-taker into a negotiator who knows exactly what margin the factory is working with. Here is the complete per-unit cost breakdown based on 2026 Chinese factory data.
Cost Model: 70-Micron PA+PE Medium Bag (60×80cm)
This analysis is based on a standard 70-micron PA+PE medium vacuum bag (60×80cm) with flat valve, double-track zipper, and 2-color gravure printing. Production run: 50,000 units.
| Cost Component | Per Unit (USD) | % of Total |
|---|
| Raw Materials | | |
| PA resin (outer layer, 20µ) | $0.028 | 11.7% |
| PE resin (inner layer, 50µ) | $0.035 | 14.6% |
| Tie resin (adhesive layer) | $0.005 | 2.1% |
| Valve assembly (flat valve) | $0.012 | 5.0% |
| Zipper (double-track, per meter) | $0.018 | 7.5% |
| Printing ink (2-color gravure) | $0.008 | 3.3% |
| Retail packaging (cardboard insert + polybag) | $0.022 | 9.2% |
| Subtotal — Materials | $0.128 | 53.3% |
| | |
| Direct Labor | | |
| Bag making machine operator (1 per 2 machines) | $0.015 | 6.3% |
| QC inspection & folding | $0.010 | 4.2% |
| Packaging & carton packing | $0.008 | 3.3% |
| Subtotal — Labor | $0.033 | 13.8% |
| | |
| Manufacturing Overhead | | |
| Electricity (blown film line + bag machine) | $0.012 | 5.0% |
| Equipment depreciation | $0.015 | 6.3% |
| Factory rent allocation | $0.008 | 3.3% |
| Quality testing (dart drop, seal strength) | $0.005 | 2.1% |
| Subtotal — Overhead | $0.040 | 16.7% |
| | |
| TOTAL FACTORY COST (EXW) | $0.201 | 100% |
| | |
| Factory profit margin (typical 15–25%) | $0.030–$0.050 | |
| TYPICAL FOB QUOTE (50K units) | $0.23–$0.28 | |
How Different Specifications Change the Cost
| Change | Cost Impact | Notes |
|---|
| 50µ → 70µ thickness | +$0.03–$0.04/unit | More PE resin, slightly slower extrusion |
| 70µ → 90µ thickness | +$0.05–$0.07/unit | Significantly more material + slower production |
| Add 3rd print color | +$0.005–$0.01/unit | Additional print cylinder + ink |
| Small size → Medium → Jumbo | Medium = 1.5× Small; Jumbo = 2.5× Small | Larger bags use more film, valves, zipper length |
| Flat valve → Check valve | +$0.03/unit | More complex valve assembly |
| Flat valve → Screw cap valve | +$0.08/unit | Molded plastic cap + threaded base |
| Customer’s own design (new print cylinder) | +$300–$500 (one-time) | Gravure cylinder engraving cost amortized over run |
Economy of Scale: How Order Volume Affects Unit Price
| Order Quantity | Approx. Unit Price (FOB) | Discount vs. 5K |
|---|
| 5,000 units | $0.38–$0.45 | Baseline |
| 10,000 units | $0.32–$0.38 | -16% |
| 50,000 units | $0.23–$0.28 | -38% |
| 100,000+ units | $0.19–$0.24 | -47% |
| 1 container (250K+ units) | $0.16–$0.21 | -53% |
Negotiation Leverage Points
- Resin price fluctuation: PE and PA prices follow crude oil. When oil drops, factories should pass savings — but they rarely do unless you ask. Track ICIS or Platts resin indexes monthly.
- Print cylinder amortization: If you’ve ordered 100K+ units, the print cylinder is fully amortized. Ask for it to be removed from reorder pricing.
- Off-season production: Factory utilization drops in Feb–Mar (post-Chinese New Year) and Aug. Placing orders for these windows can yield 5–10% discounts.
- Payment terms: Offering 30% deposit + 70% against B/L copy (instead of 30/70 T/T before shipment) can sometimes offset a higher unit price — better cash flow may be worth $0.02/unit.
Landed Cost Calculator (Example: FOB Qingdao → Amazon FBA US)
| Component | Per Unit (50K units) |
|---|
| FOB unit cost | $0.25 |
| Sea freight (LCL, Qingdao → LA/LB) | $0.04 |
| US customs duty (HS 3923.21, 3% ad valorem) | $0.01 |
| Customs bond + ISF filing + broker fee | $0.02 |
| Trucking (port → Amazon FBA warehouse) | $0.03 |
| Landed cost per unit | $0.35 |
| Retail price (Amazon) | $19.99 (6-pack = $3.33/unit) |
| Gross margin | 89.5% |
Sources: 2026 Chinese factory production data; Platts resin pricing; Freightos ocean freight indexes; US CBP duty rates.
