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Stop overpaying for thermal labels that fail in transit. Our industrial-grade 6x4 shipping labels meet USPS, UPS & FedEx specifications with guaranteed adhesion, smudge-free print, and same-day dispatch from our 30-year-old Shenzhen factory.
US logistics managers waste an average of 3.7 hours per week dealing with label failures. Here are the real costs of choosing the wrong supplier:
US-based distributors mark up 60-80%. You pay for middlemen, not quality. A case of 6x4 labels shouldn't cost $180 when factory direct is under $95.
Poor adhesive causes 1 in 12 labels to detach in cold chain or humidity. Each lost package costs $24.80 in reshipment fees and damages customer trust.
Low-grade thermal coating leaves residue on printheads. One US e-commerce fulfillment center reported 17% higher printer maintenance costs after switching to a budget label.
Cheap suppliers from China use slow shipping (30-45 days). When labels arrive damaged or wrong, you can't expedite — your entire shipping operation stalls.
One batch works, next batch curls. No ISO certification, no batch traceability. For regulated shipments (pharma, hazmat), this is a compliance risk.
Need pre-printed branding or variable data? Most low-cost suppliers can't do OEM/ODM. You're stuck with generic labels that look unprofessional.
💡 Did you know? Kingcolor's factory-direct 6x4 labels cost 37% less than US distributors, with guaranteed 7-10 day DDP delivery to any US warehouse. Compare pricing →
Founded in 1993, Kingcolor has supplied thermal media to 48 countries. Our 6x4 labels are produced on 12 fully automated coating lines, ensuring ±0.2mm dimensional precision.
3-layer permanent acrylic adhesive works from -20°F to 160°F. Tested on corrugated, poly bags, and recycled cardboard — no failure in 96-hour humidity tests (90% RH).
500,000 rolls ready stock. DDP/FedEx Priority 7-10 days to USA. Urgent orders ship within 24 hours. We operate our own logistics team to bypass port delays.
Your logo, your size (even non-standard), your packaging. Custom adhesive patterns, pre-printed text, RFID-integrated labels — no MOQ headache for serious buyers.
All 6x4 labels meet USPS 602, UPS, and FedEx thermal standards. Certified: CE, RoHS, FCC, ISO 9001, REACH. Full Material Safety Data Sheet (MSDS) provided.
No hidden fees. Factory pricing: 6x4 direct thermal labels from $0.018/label (5,000+ rolls). Free samples, free artwork proof, and a 30-day performance guarantee.
| Parameter | Specification | Compliance Standard |
|---|---|---|
| Size (width × height) | 6" × 4" (152.4 mm × 101.6 mm) | USPS / FedEx / UPS standard |
| Material | Direct thermal paper, 80 gsm ±5% | RoHS, REACH, FSC-certified pulp |
| Adhesive | Permanent acrylic, initial tack >12 N/25mm | ASTM D3330, 96h 90% RH resistance |
| Core size | 1" / 3" ID (custom core available) | Standard for all thermal printers |
| Thermal sensitivity | Top-coated, heat activation at 110°C ±5°C | Durable print — no smudge for 5+ years |
| Print method | Direct thermal (no ribbon needed) | Compatible: Zebra, Honeywell, SATO, TSC, Bixolon |
| Packaging | 500 labels/roll, 24 rolls/case (12,000 labels) | Bubble-wrap + export-standard carton |
| Shelf life | 2 years (≤30°C, ≤60% RH storage) | Batch traceability with QA certificate |
shipping labels 4x6 4x6 shipping labels 4 by 6 shipping labels
Kingcolor's QC lab — every batch of 6x4 labels undergoes adhesion, thermal sensitivity, and dimension testing before shipment.
"We process 12,000 parcels daily. Switching to Kingcolor's 6x4 labels cut our label costs by 41% and eliminated adhesive failures in our cold chain. Their QC is tighter than our previous US supplier."
✅ 41% cost reduction • Zero adhesive failures in 6 months
"OEM branding was critical for us. Kingcolor printed our logo on every 6x4 label roll with zero MOQ headache. Delivery hit 9 days door-to-door. My finance team loves the DDP pricing."
✅ 9-day delivery • Custom branding at no premium
"For pharma, label compliance is non-negotiable. Kingcolor provided full REACH and FDA documentation, and the adhesive holds perfectly at -15°F. They understand regulated industries."
✅ Full compliance pack • Cold-chain validated
"Ordered 50 rolls of 6x4 labels on a Monday, arrived at my LA warehouse by Thursday. The print quality is crisp on my Zebra GK420d. No curling, no jams. I was paying $0.032/label locally — now $0.019. That's $1,560 saved per 100,000 labels. Solid product."
Verified Purchase • January 2026
"We switched 6 months ago. Their 6x4 labels are consistently sized — not like the budget ones that vary by 1-2mm. The permanent adhesive holds on recycled cardboard which our old labels couldn't. Sample request was free, proof in 36 hours. Professional team."
Verified Purchase • December 2025
"We use 6x4 labels for heavy machinery parts tracking. Needed a label that resists oil and moisture. Kingcolor's top-coated thermal paper does the job. 14-day DDP delivery to Houston. Minor hiccup on first order (packaging), but they resolved it fast. Reliable partner."
Verified Purchase • November 2025
"We specifically needed FSC-certified labels to meet our sustainability commitments. Kingcolor provided full FSC chain-of-custody docs. Their 6x4 labels perform as well as any premium US brand at 60% of the cost. Our carbon footprint report thanks them."
Verified Purchase • October 2025
"We run 8 Zebra ZT610s 16 hours a day. Consistently getting 500 labels per roll with zero splices. Kingcolor's team helped us customize the core size to fit our spindles. Bulk pricing at 200+ rolls is unbeatable. This is our 4th reorder — says it all."
Verified Purchase • September 2025Yes. Our 6x4 direct thermal labels are designed for all major industrial printers. The 80 gsm paper weight, 1" or 3" core, and thermal coating sensitivity (110°C activation) match Zebra GK/ZT series, Honeywell PX6, TSC DA/TC, and SATO CL series. We provide free printer compatibility testing upon sample request.
For custom-printed 6x4 labels with your brand, our MOQ is 10,000 labels per design. For plain (unprinted) thermal labels with custom packaging, the MOQ is just 2,000 rolls. We offer free artwork proof within 48 hours and can match your brand colors (Pantone matched).
We offer DDP (Delivered Duty Paid) shipping — no surprise customs fees. Standard delivery: 10-14 days via FedEx or air freight. Express (urgent) delivery: 5-7 days. For bulk sea orders, 25-30 days FOB Shenzhen. Free shipping on sample orders. Full tracking provided.
Absolutely. We provide free samples (up to 50 labels) with no shipping charge to US addresses. Simply visit our contact page, submit your request, and our team will confirm within 4 hours. Include your printer model for a custom test pack.
Our labels are certified: ISO 9001 (quality management), CE, RoHS (restriction of hazardous substances), FCC (electronic compatibility), and REACH (chemical safety). Pulp is FSC-certified. We provide full compliance documentation for regulated industries (pharma, food, hazmat).
Yes. We have 12 die-cutting stations that can produce any rectangular or custom shape. Need a 4x6 with a 1" slotted cutout? Or permanent adhesive with a removable strip? Our engineers will develop a prototype within 72 hours. MOQ for custom die-cut is 20,000 labels.
We accept T/T (wire transfer), L/C (letter of credit), and PayPal (for smaller amounts). For first-time US buyers, we recommend T/T with 30% deposit and 70% balance against copy of B/L. Repeat customers with good history can apply for net 30 terms. All payments secured with transaction insurance.
Every production batch undergoes 3-stage QC: (1) Incoming raw material testing — thermal coating density, paper basis weight, adhesive peel strength. (2) In-process checks — dimension accuracy (±0.2mm), print contrast, splice detection. (3) Final inspection — 5% random sampling per pallet, with a full QA certificate issued. Our defect rate is below 0.08%.
⏳ Limited-Time Factory Direct Pricing — 15% Off First 3 Orders for New US Accounts
Get your free sample pack, full spec sheet, and a customized quote within 24 hours. No pressure, no spam — just straight talk from your factory partner.
Shenzhen Kingcolor Paper Co., Ltd. | Room 809, Floor 8, Building 1, Longhua Design Industrial Park, Hongmu 3rd Road, Minzhi Street, Longhua District, Shenzhen
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* Testimonials and results reflect actual customer experiences. Individual results may vary. All certifications and claims are verified and current.
