LED Light Strips Manufacturer: China Sourcing Guide
Sourcing LED light strips from China for private label, wholesale, or a specific project means navigating SMD chip types, voltage and IP rating options, and OEM customization — not just picking the cheapest listing. This guide covers the core specs to understand before requesting quotes and how to vet a manufacturer.
- Common SMD types
- 2835, 5050, 3528, 3014, 5630, and COB — differ in chip size, brightness, and density per meter
- Voltage options
- 12V/24V DC for most cut-to-length strips; 110-240V AC line-voltage strips for long continuous runs without a driver
- IP ratings
- IP20 (dry indoor use) up to IP65/IP67/IP68 (splash-resistant to fully submersible/outdoor)
- Certifications
- UL/ETL for the US, CE and RoHS for the EU, SAA for Australia
- Manufacturing hub
- Concentrated in Guangdong province, especially Shenzhen and Zhongshan
SMD Chip Types Explained: 2835, 5050, 3528, COB
The chip type printed on a strip’s spec sheet determines brightness, size, and typical use case more than any other single spec.
| Chip Type | Typical Brightness | Common Use |
|---|---|---|
| SMD 2835 | ~20-22 lm/chip | General-purpose, most widely used chip in current production |
| SMD 5050 | ~18-22 lm/chip (3 diodes per chip) | Higher brightness, RGB/color-changing strips (each chip has 3 diodes, useful for color mixing) |
| SMD 3528 | ~7-8 lm/chip | Lower-cost, lower-brightness applications, accent lighting |
| COB (Chip-on-Board) | High, continuous | Dot-free, smooth continuous light line — premium architectural and display lighting |
Chip density (LEDs per meter — commonly 30, 60, 96, 120, or up to 240+) multiplies with chip type to determine total brightness and power draw. Always request both the chip type and density together — the same chip type at different densities produces very different results.
Voltage and IP Rating: Matching the Strip to the Application
Voltage
- 12V DC: the most common option for short-to-medium runs; simpler driver requirements.
- 24V DC: better for longer continuous runs — less voltage drop over distance than 12V.
- 110-240V AC “line voltage” strips: designed for very long continuous runs (up to 20m+ with a single feed) without a separate low-voltage driver — useful for large commercial installations.
IP (Ingress Protection) Rating
| Rating | Protection Level | Typical Use |
|---|---|---|
| IP20 | No moisture protection | Dry indoor use only (under cabinets, indoor accent lighting) |
| IP54/IP65 | Splash and dust resistant | Kitchens, bathrooms, semi-exposed areas |
| IP67 | Temporary submersion resistant, silicone-filled tube | Outdoor installations, wet locations |
| IP68 | Continuous submersion resistant | Pools, fountains, fully outdoor/wet environments |
Specifying the wrong IP rating for the installation environment is one of the most common and expensive mistakes in LED strip sourcing — a strip rated for indoor use will fail quickly outdoors, while over-specifying IP68 for a dry indoor application adds unnecessary cost.
Private Label and OEM: What to Specify Before Requesting Quotes
Most established Chinese LED strip manufacturers support OEM/ODM customization, but a supplier saying “yes we do OEM” means little without specifics. A complete request should cover:
- Chip type and density (LEDs per meter)
- Color temperature range (CCT) if white — commonly 1800K-6500K
- Color Rendering Index (CRI) — CRI 80 is standard, CRI 90+ for color-critical applications (retail display, photography lighting)
- Color consistency requirement — measured in SDCM (Standard Deviation of Color Matching); tighter SDCM (e.g. 3-step) costs more but ensures strips from different batches match visually
- PCB width and reel length
- Cutting length intervals (strips are cut at fixed intervals — confirm this matches your installation needs)
- Custom packaging and private label requirements (box design, barcode placement, instruction inserts)
A stronger supplier will ask you these questions before quoting price — treat a supplier who skips straight to a price quote without asking about application and specs as a signal to dig deeper before committing.
Certifications: UL, CE, RoHS, and What Each Covers
- UL/ETL — required for electrical safety compliance in the US market; look for the specific certificate covering your exact product, not just a general company certification.
- CE — required for the EU; covers electrical safety and electromagnetic compatibility.
- RoHS — restricts hazardous substances (lead, mercury, etc.); expected as standard on any legitimate export-ready product.
- SAA — required for electrical products sold in Australia.
Certifications shown on a supplier’s website or product listing don’t automatically mean every specific strip model and configuration is covered — request the certificate document and confirm it matches the exact model, voltage, and wattage you’re ordering, not just the general product family.
Sourcing and Verifying a Manufacturer
The general verification framework used across this site applies here — see the Find and Verify Chinese Manufacturers guide. LED-strip-specific points to add:
- Ask what happens on repeat orders, not just the first sample — color and brightness consistency across production batches is one of the biggest quality risks in this category, and is what separates established manufacturers from smaller assemblers.
- Request the LED chip brand (well-known chip suppliers exist alongside generic/unbranded options) — this affects both consistency and lifespan.
- Confirm production lead time (commonly quoted in the 1-3 week range for standard configurations, longer for custom OEM runs) and MOQ, which can be as low as a few meters for standard products but rises for full custom OEM packaging.
- For larger orders, request a factory audit or third-party inspection before final payment, consistent with sourcing practice for any other product category on this site.
Frequently Asked Questions
What’s the difference between SMD 2835 and SMD 5050 LED strips?
SMD 5050 chips contain 3 diodes each (useful for RGB/color-changing strips) and are generally brighter per chip, while SMD 2835 is a single-diode chip that’s currently the most widely used general-purpose option.
What IP rating do I need for outdoor LED strips?
IP65 works for splash-resistant semi-exposed areas, but for fully outdoor or wet-location installations, IP67 or IP68 is the appropriate choice — specifying IP20 or IP54 for outdoor use will lead to early failure.
What voltage should I choose for LED strips?
12V works well for shorter runs; 24V reduces voltage drop over longer continuous runs; 110-240V line-voltage strips suit very long commercial installations without needing a separate low-voltage driver.
What’s SDCM and why does it matter?
SDCM (Standard Deviation of Color Matching) measures how consistent the color output is across different production batches — a tighter SDCM (like 3-step) costs more but prevents visible color mismatches when strips from different orders are installed together.
Do I need UL certification for LED strips sold in the US?
For electrical safety compliance in the US market, yes — request the specific UL or ETL certificate that covers your exact product model, not just a general company certification.
What’s the minimum order quantity for custom LED strips?
It varies significantly — standard configurations can have very low MOQs (a few meters to a few rolls), while full custom OEM packaging and private branding typically require higher minimums to justify setup costs.