📑 Table of Contents
Why Quality Grading Matters
"Send me good quality" is the most common — and most useless — instruction in wholesale sourcing. Without a shared quality language between buyer and supplier, "good quality" means whatever the factory thinks it means on that particular day. The result: inconsistent shipments, disappointed customers, and margin-eroding returns.
Professional fan quality grading solves this by establishing objective, measurable, and verifiable standards that both parties agree to before production begins. When your purchase order specifies "Grade A, AQL 2.5," both you and the factory know exactly what that means — and a third-party inspector can verify it independently.
The Three Quality Grades: A, B, C
EastFanArt uses a three-tier grading system aligned with international handicraft quality standards. Each grade has distinct material, workmanship, and tolerance requirements:
🅰️ Grade A — Premium / Luxury
Target Market: Luxury retail, museum stores, high-end corporate gifts, collector editions
Materials: Grade AA bamboo (selected for uniform color, no nodes on visible ribs, carbonized evenly), Grade 6A+ mulberry silk (minimum 12 momme, no slubs visible within 30cm viewing distance), genuine sandalwood ribs with consistent grain and fragrance intensity.
Workmanship: Rib alignment within ±0.3mm. Silk tension uniform across all panels — no rippling or sagging. Printing registration within ±0.2mm. Gold foil perfectly crisp with zero flaking. All tassels hand-tied with consistent length (±1mm).
Inspection Standard: AQL 1.0 (stricter). Zero critical defects. Maximum 1 major defect per 100 units. Maximum 3 minor defects per 100 units.
Price Premium: 2–4× over Grade B equivalent. Appropriate when retail price exceeds $40.
🅱️ Grade B — Standard / Commercial
Target Market: Gift shops, mid-range retail, tourist stores, corporate promotional merchandise
Materials: Standard bamboo (minor color variation acceptable, occasional small nodes on non-visible ribs), high-quality polyester fabric or Grade 3A silk (8–10 momme, minor slubs acceptable beyond 15cm viewing distance).
Workmanship: Rib alignment within ±0.8mm. Fabric tension generally uniform — minor rippling acceptable if not visible at arm's length. Printing registration within ±0.5mm. Minor gold foil edge roughness acceptable if not visible at 30cm.
Inspection Standard: AQL 2.5 (standard). Zero critical defects. Maximum 3 major defects per 100 units. Maximum 7 minor defects per 100 units.
Price Range: This is EastFanArt's default grade and the sweet spot for 80% of wholesale orders. Best value for money.
🅲 Grade C — Economy / Promotional
Target Market: Event giveaways, festival merchandise, promotional items, dollar-store retail
Materials: Machine-graded bamboo (visible color variation, nodes may be present on some ribs), printed paper or economy polyester, plastic ribs. Material appearance is secondary to function.
Workmanship: Rib alignment within ±1.5mm. Fabric/paper tension adequate — some rippling expected. Printing registration within ±1.0mm. Gold foil may have visible edge irregularity. Minor cosmetic imperfections are expected and accepted.
Inspection Standard: AQL 4.0 (relaxed). Zero critical defects. Maximum 5 major defects per 100 units. Maximum 12 minor defects per 100 units.
Price Range: Lowest cost per unit. Suitable when the fan is a disposable promotional item — it needs to open, fan air, and display a logo. Aesthetic perfection is not the priority.
Inspection Criteria by Fan Component
Rib/Frame Inspection
| Checkpoint | Grade A | Grade B | Grade C |
|---|---|---|---|
| Bamboo color uniformity | ≥90% match across all ribs | ≥75% match | ≥60% match |
| Rib thickness consistency | ±0.1mm | ±0.2mm | ±0.3mm |
| Surface smoothness | No splinters, fully sanded | Minor roughness on edges OK | Visible sanding marks acceptable |
| Node/blemish presence | None on visible ribs | Occasional small nodes OK | Nodes common, accepted |
| Carbonization evenness | Uniform color, no streaks | Minor streaks acceptable | Noticeable variation OK |
Surface/Fabric Inspection
| Checkpoint | Grade A | Grade B | Grade C |
|---|---|---|---|
| Silk slubs (defects) | None within 30cm view | 2 max per panel within 15cm | 5 max per panel |
| Print registration | ±0.2mm | ±0.5mm | ±1.0mm |
| Color deviation (ΔE) | < 2.0 | < 3.0 | < 5.0 |
| Fabric tension | Drum-tight, no ripples | Minor ripples at arm's length | Some rippling expected |
| Edge gluing | Invisible seam, no glue marks | Minor glue line visible on close inspection | Glue line may be visible |
Defect Classification: Critical, Major, Minor
Understanding defect classification is essential for interpreting inspection reports and negotiating with suppliers:
| Classification | Definition | Examples (Fans) | Action |
|---|---|---|---|
| 🔴 Critical | Renders product unsafe or illegal | Sharp splinters on bamboo; lead in paint exceeding regulatory limits; missing safety warning labels (EU/UKCA); mold on silk | Reject entire lot. Zero tolerance. |
| 🟡 Major | Significantly affects usability or saleability | Fan won't open/close smoothly; rib breaks during normal use; print misalignment >3mm; silk tear >5mm; wrong design printed | AQL-governed. Typically max 2.5–4% depending on grade. |
| 🟢 Minor | Cosmetic imperfection; does not affect function | Small glue spot visible on close inspection; minor thread pull on tassel; slight color variation between panels; packaging scuff | AQL-governed. Higher tolerance threshold. |
Understanding AQL Sampling
AQL (Acceptable Quality Limit) is the international standard (ISO 2859-1) for determining how many units to inspect from a production lot and what defect rate is acceptable. For fan imports, these are the standard AQL levels:
- AQL 1.0: Premium/Grade A — zero critical, max 1.0% major, max 2.5% minor. Used for luxury products where near-perfection is expected.
- AQL 2.5: Commercial/Grade B — zero critical, max 2.5% major, max 4.0% minor. The industry standard for general merchandise. EastFanArt's default.
- AQL 4.0: Economy/Grade C — zero critical, max 4.0% major, max 6.5% minor. For promotional/disposable products where unit cost is the primary concern.
For a 1,000-unit order at AQL 2.5 (Level II, normal inspection), the inspector examines 80 randomly selected units. If 3 or fewer major defects are found, the lot passes. If 4 or more are found, the lot fails and requires 100% sorting or rework.
Functional Testing Requirements
Beyond visual inspection, fans must pass functional tests:
- Open/Close Cycle Test: Grade A: 500 cycles without degradation. Grade B: 200 cycles. Grade C: 50 cycles. Testing performed on 5 random samples per lot.
- Drop Test: Fan dropped from 1m onto hardwood floor — must survive 3 drops without structural failure (Grades A & B).
- Tensile Test (Rib Pivot): The rivet/pin at the fan's pivot point must withstand 5kg of lateral force without loosening (Grades A & B).
- Colorfastness: Silk surfaces tested for color transfer (dry rub and wet rub). Grade A: Grade 4–5 on the grey scale. Grade B: Grade 3–4.
- Moisture Resistance: Fan exposed to 70% RH for 24 hours — bamboo should not warp more than 1mm (Grade A) or 2mm (Grade B).
How to Write a Quality Specification in Your PO
A clear quality specification in your purchase order prevents 90% of quality disputes. Here's a template you can use:
QUALITY SPECIFICATION Product: [Fan Description] Grade: [A / B / C per EastFanArt Grading Standard 2026] AQL Level: [1.0 / 2.5 / 4.0] Inspection Standard: ISO 2859-1, Level II, Normal Reference Sample: Golden sample #GS-[number], approved [date] Tolerances: Per Grade [A/B/C] specification table Functional Testing: [Specify tests required] Packaging: [Specify packaging tier] Third-Party Inspection: [Required/Not Required] before shipment
Include this specification block in every PO. If using a third-party inspection service (SGS, Bureau Veritas, Intertek, QIMA), provide them with the same specification and your approved golden sample.
Get Quality You Can Rely On
EastFanArt's in-house QC team inspects every order to your specified grade before shipment. Third-party inspection reports available upon request. Zero critical defects — guaranteed.
📧 Request QC Sample ReportFrequently Asked Questions
Q: What's the difference between "Grade A" and "AQL 1.0"?
Grade refers to the product quality standard (materials, workmanship, tolerances). AQL refers to the inspection sampling strictness (how many defects are acceptable in the inspected sample). You can have Grade A product inspected at AQL 4.0 (looser inspection) — the product quality is high but you're accepting a higher defect rate in the lot. Conversely, you could inspect Grade C at AQL 1.0 — looking very carefully at economy-grade product. Best practice: match them. Grade A → AQL 1.0, Grade B → AQL 2.5, Grade C → AQL 4.0.
Q: What happens if a shipment fails inspection?
If a pre-shipment inspection fails (defects exceed the AQL threshold), EastFanArt offers three options: (1) 100% sorting and re-inspection at our cost, (2) rework and re-inspection with adjusted delivery date, or (3) order cancellation with full refund. The specific remedy is negotiated case-by-case, but our policy is to never ship non-conforming product without buyer's written acceptance.
Q: Do I need to hire a third-party inspection company?
It's recommended for first-time orders or orders above $5,000. EastFanArt welcomes third-party inspectors from any accredited agency (SGS, BV, Intertek, QIMA, AsiaInspection). We provide factory access, inspection facilities, and the golden sample for comparison. For repeat buyers who trust our in-house QC, third-party inspection is optional. All buyers receive our internal QC report with photos regardless.
Q: How do I choose between Grade A and Grade B for my market?
Apply the "arm's length test": if your customer will typically view the fan at arm's length (retail display, gift presentation), Grade B is sufficient — its minor imperfections are invisible at that distance. If your customer will inspect the fan closely (collectors, luxury buyers, museum curators), invest in Grade A. For e-commerce, Grade B with excellent photography often outperforms Grade A — the camera doesn't capture the subtle differences that justify the price premium.
Q: Can I mix grades in one order — some premium, some standard?
Yes, and this is a smart strategy for many buyers. For example, order 70% Grade B for your standard retail line and 30% Grade A for your "collector's edition" SKU. The production run is combined, but QC is performed separately for each grade. Just specify clearly on your PO which SKUs correspond to which grade.