+86-15625231989
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For US logistics managers, e-commerce ops directors, and procurement teams who need reliable, high-speed thermal labels that work flawlessly with Zebra, Honeywell, and Sato printers — while reducing total cost of ownership.
✓ 10,000+ B2B clients worldwide | ✓ ISO 9001 / CE / RoHS | ✓ 24h production turnaround
Over 12% of budget thermal labels fail adhesion or smudge tests — causing printhead damage, delayed shipments, and costly reprints. Each failure costs your operation $2–8 in labor and downtime.
Shipping lightweight but bulky 4×6 labels from Asia or across the US adds 15–28% to your landed cost. Poorly packed rolls arrive crushed, leading to printer jams.
Standard suppliers quote 25–40 days. When you run out, you're forced to pay 3x–5x spot prices or stop your packing line. Every hour of downtime costs $1,200+ in a mid-size warehouse.
1-inch vs 1.5-inch core mismatches cause up to 18% waste because the labels won't mount on your dispensers. You're paying for labels you can't use.
These aren't minor annoyances — they're margin killers. And in the 2026 market, you can't afford either.
Our patented triple-layer top-coat delivers crisp, scannable barcodes at speeds up to 12 ips — even in cold storage (-20°C) or high-humidity environments (95% RH). No smudging, no printhead residue.
Founded in 1993, KingColor owns the entire production line — from coating to slitting to packaging. You save 30–45% vs. brand-name distributors. No middlemen markups.
Our Shenzhen factory runs 24/7 on-demand manufacturing. Standard orders ship in 7 days; urgent orders in 48 hours. We stock 500+ tons of raw paper year-round.
Every 4×6 roll uses exact 1-inch or 1.5-inch cores, with crush-resistant packaging tested for FedEx/UPS parcel shipping. Zero waste from damaged rolls.
All labels carry CE, RoHS, REACH, and UL-recognized adhesive certifications. FDA-compliant materials available for medical/pharma labeling.
Need custom adhesive strength? Special core sizes? Your logo on the box? We've done 1,200+ OEM projects for US brands. Minimum order: just 5 cases.
| Parameter | Specification | Notes |
|---|---|---|
| Label Size | 4 in × 6 in (101.6 mm × 152.4 mm) | ±0.5 mm tolerance |
| Core Diameter | 1 inch / 1.5 inch (both available) | Specify when ordering |
| Roll Outer Diameter | 5 in / 6 in / 8 in | Custom ODM available |
| Face Stock | Direct thermal paper, 70–80 gsm | BPA-free option |
| Adhesive | Permanent / Removable / Freezer-grade | UL-recognized |
| Print Technology | Direct thermal (no ribbon needed) | Compatible all major printers |
| Print Speed | Up to 12 ips (305 mm/s) | No image degradation |
| Temperature Range | -20°C to +70°C | Freezer-safe option available |
| Shelf Life | 3 years (under 25°C / 60% RH) | Factory-sealed moisture barrier |
| Certifications | CE, RoHS, REACH, ISO 9001:2015 | FDA upon request |
| MOQ | 5 cases (≈ 50 rolls) | Sample order: 1 roll free |
6x4 inch thermal label 4 by 6 thermal labels 4x6” thermal labels
"We tested 4 suppliers for 4×6 direct thermal labels. KingColor had the best adhesion on recycled cardboard — zero peeling after 30 days. Saved us $4,200/month vs. our previous supplier. We're now on auto-ship."
— Tom H., Warehouse Manager, BoxExpress Logistics (Dallas, TX)
"The OEM process was seamless. We needed 1.5-inch cores with our brand printed on the box. KingColor delivered 50 cases in 9 days — including artwork approval. Print quality is as good as Avery at 40% less cost."
— Linda P., Procurement Specialist, MediSupply Group (Boston, MA)
"Our Zebra ZT410s run these labels at 10 ips all day with zero jams. The moisture-sealed packaging is a game-changer for our humid Florida warehouse. We reduced label waste by 80%."
— Raj K., Operations Manager, SunState Fulfillment (Orlando, FL)
"I switched to KingColor after my previous supplier raised prices 30% overnight. Not only did I get better pricing, but the labels also scan more reliably. First order saved us $6,800. Highly recommend."
— Megan W., Supply Chain Director, QuickShip Corp. (Seattle, WA)
"We run 3,000+ packages/day and label jams were our #1 headache. Since switching to KingColor 4×6 labels, we've had just 1 jam in 4 months. The consistency is unbelievable. Plus, their WhatsApp support responds in minutes."
— Carlos R., E-commerce Fulfillment Lead, OmniRetail USA (Atlanta, GA)
First-time US buyers get a free sample roll + priority production slot. No credit card required.
✅ 100% compatibility guarantee — if the sample fails, we refund or replace at no cost.
KingColor Paper Co., Ltd. | Room 809, Floor 8, Building 1, Longhua Design Industrial Park, Hongmu 3rd Road, Minzhi Street, Longhua District, Shenzhen | Tel: +86-15625231989
Trusted by 10,000+ Operations Worldwide