Third-Party Inspection for Cashmere: How to Pick a B2B QC Company (And When It Matters)

A B2B cashmere buyer has three options for pre-shipment quality control: rely on the mill’s internal QC, send a buyer’s own QC person to the factory, or hire a third-party inspection company. For first orders, large orders (>2,000 pieces), and orders with strict AQL requirements, third-party PSI is the standard recommendation. The question is which company — and what the inspector is actually checking during the 3-5 day on-site visit.

This page covers when third-party PSI is worth the cost, how the four main QC companies (SGS, Bureau Veritas, Intertek, QIMA) differ on price, AQL specialty, and turnaround for cashmere, what the inspector checks during a 1,000-piece knitwear PSI at an Ordos factory, and the 7 defects they typically catch that the mill’s internal QC does not. The framework applies whether you are sourcing knitwear, woven fabric, or finished yarn.

When third-party PSI is worth the cost

Third-party PSI on a cashmere order typically costs $250-400 per inspector-day plus travel expenses. For a 1,000-piece knitwear order, a 3-day PSI at an Ordos mill comes to roughly $1,500-2,500 total (one inspector, 3 days on site, plus travel). That is a meaningful percentage of the order value (typically 1-3% of a $50,000-100,000 order).

The cost is worth it in three scenarios:

First orders with a new mill. Even if the mill’s references are excellent, the PSI on the first order establishes a quality baseline. If the mill knows the buyer has a third-party inspector visiting, the mill’s internal QC standard goes up on that order and on every subsequent order.

Large orders (2,000+ pieces). At 2,000+ pieces, the absolute cost of a 3-5% defect rate is meaningful (60-100+ pieces at risk), and a $1,500-2,500 PSI is a small percentage of the order value. Below 2,000 pieces, the math is less compelling and buyer-direct inspection or mill self-inspection is more common.

Orders with strict AQL requirements. AQL 1.0 (1.0% defect rate acceptable) is harder to verify by visual inspection alone. A third-party inspector with calibrated equipment and AQL 1.0 sampling tables is materially more accurate than a mill’s internal QC team for that AQL level.

For repeat orders (3+ successful orders with the same mill), PSI frequency can be reduced to every 2-3 orders. For orders below 500 pieces, PSI is rarely cost-effective — a buyer-direct visit is more common.

The four main QC companies for cashmere

There are four main third-party QC companies that serve B2B cashmere buyers at Ordos mills. All four are accredited to ISO 17020 for inspection bodies and offer AQL-based pre-shipment inspection services. The differences are in price, lead time, and specialization.

Company	Inspector-day rate	Typical lead time	Cashmere / textile specialty	On-site report turnaround
SGS	$300-380/day	3-5 working days	Generalist, large inspection teams in Tianjin	Note 24-48 hours after PSI
Bureau Veritas	$280-360/day	3-5 working days	Strong in EU compliance, REACH	Note 24-48 hours after PSI
Intertek	$290-370/day	3-5 working days	Strong in textile and softlines specialty	Note 24-48 hours after PSI
QIMA (formerly AsiaInspection)	$260-340/day	2-4 working days	Cashmere and knitwear specific, fastest booking	Note 24 hours after PSI

For B2B cashmere buyers at Ordos mills, QIMA typically has the fastest booking lead time (often 2-3 working days from request to on-site) and the most cashmere-specific experience. SGS and Bureau Veritas are the larger generalist firms with stronger brand recognition but slower booking. Intertek is mid-range with strong textile specialty. The choice often comes down to which company the buyer’s existing supply chain uses for other product categories — most buyers standardize on one company across their product line.

What the inspector actually checks during a cashmere PSI

A standard pre-shipment inspection at a cashmere apparel mill follows the AQL sampling protocol. For a 1,000-piece order at AQL 2.5, the inspector pulls a random sample of 80 pieces (per ISO 2859-1 General Inspection Level II) and runs through a structured checklist. The checklist has 7 categories.

1. Quantity verification. The inspector counts the finished pieces in the warehouse, broken down by size and color, against the buyer’s PO. Discrepancies of more than 2-3% are flagged.

2. Visual appearance. Random sampling against the buyer’s approved sample (counter sample or pre-production sample). The inspector checks for color drift, yarn irregularities, dye spots, stains, holes, and obvious knitting defects.

3. Measurements. Each sampled piece is measured at the agreed measurement points (chest width, body length, sleeve length, shoulder width, etc.) against the buyer’s size spec. Tolerances are typically +/- 1cm for body measurements and +/- 0.5cm for neck/collar/cuff dimensions.

4. Hand-feel and pilling test. The inspector runs a Martindale pilling test on a fabric swatch (5,000 cycles per ISO 12945-2) and reports the pilling grade (1-5, where 5 is best). For premium cashmere programs, the buyer specifies a minimum grade (typically 3-4). The inspector also does a subjective hand-feel check against the approved sample — soft enough, surface smooth enough.

5. Fiber composition. The inspector pulls a yarn sample from each color and sends it to a lab for fiber composition verification (typically optical microscopy or chemical dissolution per AATCC 20 or ISO 1833). For 100% cashmere claims, this confirms the cashmere content and checks for the presence of other fibers (wool, acrylic, viscose). Turnaround for the lab test is 3-5 working days after the PSI.

6. Trims and accessories. Buttons, zippers, brand labels, care labels, hang tags. The inspector checks the count, the position, the stitching, and the labeling accuracy against the spec.

7. Packaging. Inner polybag, individual box (if applicable), master carton dimensions and weight, carton markings (buyer’s marks, PO number, size/color breakdown), and palletization if shipped by pallet.

The 7 defects third-party PSI typically catches that mill QC misses

Based on our experience hosting third-party inspectors at our Ordos mill over the past 5 years, the 7 most common defects caught by the PSI that the mill’s internal QC did not catch are:

1. Color drift between approved lab dip and bulk dye. The mill’s QC compares bulk pieces to a lab dip that was approved earlier, but the lab dip may have been bleached slightly differently. The third-party inspector pulls a fabric swatch and checks it against the agreed Delta E tolerance (typically ≤ 1.0 against the master standard).

2. Measurement creep on larger sizes. The mill’s QC checks the medium size carefully, but XL and XXL may have measurement creep (proportional measurements not correctly scaled). The third-party inspector measures all size samples, not just medium.

3. Pilling grade below spec. The mill’s internal QC does not typically run a Martindale pilling test on every order — it is a destructive test that consumes the sample. The third-party inspector pulls a separate swatch and runs the test independently.

4. Fiber composition drift. The mill’s internal QC does not run fiber composition tests on every order. A cashmere/wool blend that was specified as 70/30 may have shifted to 65/35 because of how the fiber was blended. The third-party inspector sends the sample to a lab for independent verification.

5. Stitch density drift. The mill’s knitting specification is typically a target stitch count per 10cm. The mill’s internal QC checks the average stitch count, but the third-party inspector checks the variability across the garment (under-arm vs center-front vs side-seam) and may find drift that the average masked.

6. Care label accuracy. The care label on the finished garment must match the fiber composition and the wash instructions. Cashmere garments that are labeled ‘dry clean only’ but the fiber content is 30% wool may have a different recommended care. The third-party inspector verifies the label against the actual fiber content and the care standards (ISO 3758).

7. Packaging markings. Carton markings that are wrong (PO number, size/color breakdown, destination port) cause customs clearance delays and warehouse receiving errors. The third-party inspector checks the carton markings against the buyer’s spec — the mill’s internal QC rarely checks this in detail.

How to brief the inspection company

To get the most out of a third-party PSI, the buyer should provide the inspection company with:

• The approved counter sample (sent to the inspection company in advance, or held at the mill for the inspector to use)
• The size spec with tolerances
• The AQL standard (typically AQL 2.5 for cashmere, AQL 1.0 for premium)
• The fiber composition spec (e.g., 100% cashmere, or 70% cashmere + 30% merino)
• The pilling grade requirement (e.g., minimum grade 3-4 on the Martindale test)
• The packaging spec (carton markings, individual packaging, palletization)
• A list of previous defects if this is a repeat order — the inspector can specifically check for those defects this time

The inspection company typically produces a report within 24-48 hours of the PSI completing, with photos of any defects found, measurements tabulated, and a pass/fail recommendation. The buyer has 2-3 working days to accept the report or request re-inspection.

Working with us on third-party PSI

At our Ordos mill, we host inspectors from SGS, Bureau Veritas, Intertek, and QIMA on a regular basis. Our standard PSI protocol is AQL 2.5, and we provide the inspector with full access to the finished goods, the yarn samples, the bulk dye records, and the production records. For buyers who want to use a different inspection company (or their own QC person), the same access applies.

For more on factory-side QC standards, see our AQL final inspection guide. For the actual supplier audit checklist before placing an order, see our 12-point factory audit guide. For the broader procurement workflow, see our 9-step B2B procurement process.