High-Performance Dual White & Architectural Flexible LED Series
Engineered for hotel projects, stone backlighting, retail displays, and luxury interior cove lighting with strict MacAdam 3-Step color binning.
DC48V High Brightness Ultra Long Flexible Waterproof LED Light Strip
Flexible 250*250mm Cuttable LED Sheet Light DC24V Dual Color 2700K-6500K
5050 RGBCCT Slim Flexible LED Sheet Panel Light for Stone Backlighting
Flexible CCT Tunable White LED Light Sheet DC24V High CRI 90 Dimmable
DC 24V RGB COB LED Strip 10mm 672 Chips/m IP67 Waterproof FPC
5M High-Density Indoor Flexible FCOB LED Strip Light DC12V DC24V
DC24V RGB Addressable Dynamic LED Sheet Light for Kitchen & Display
DC12V/24V IP66 Waterproof Square Silicone Neon LED Strip Light 5m Roll
Dual White (Tunable White) LED Technology & Engineering Architecture
Dual White LED strips—frequently designated as Tunable White, Dynamic White, or CCT Adjusting LED Tape—represent a major paradigm shift in architectural linear lighting. Unlike static single-color strips, Dual White systems combine two alternating LED chips (typically 2700K Warm White and 6500K Cool White) onto a unified Flexible Printed Circuit (FPC). By regulating the current ratio across these two color channels using Pulse Width Modulation (PWM) or DALI-2 DT8 controllers, lighting designers can smoothly transition color temperature anywhere along the Planckian Locus between 2700K and 6500K without compromising luminous intensity or color rendering integrity.
At Shenzhen Covek Lighting Co., Ltd., our engineering division solves the primary failure modes of low-tier dual-color strips: uneven thermal expansion, color-shift over time, voltage drop in long runs, and poor color consistency. Through advanced SMT encapsulation and high-density copper FPC engineering, our OEM/ODM Dual White solutions set the standard for demanding hotel, retail, and residential lighting projects worldwide.
Strict MacAdam 3-Step Binning
We utilize single-bin LED chip sorting from Nationstar and San'an, guaranteeing consistent color temperature across all production batches with ΔE < 3 SDCM.
3oz/4oz Rolled Copper FPC
Heavy double-sided copper FPC lowers electrical resistance, minimizes thermal stress, and guarantees uniform brightness across continuous runs up to 10–50 meters.
CRI Ra > 95 & R9 > 80
Fully compliant with IES TM-30-18 standards (Rf ≥ 93, Rg ≥ 100), accurately reproducing rich wood tones, stone textures, and luxury retail merchandise.
Flip-Chip FCOB vs. Surface-Mount SMD Dual White Strips
Buyers evaluating OEM procurement must choose between traditional Surface Mount Device (SMD2835 / SMD5050) and Flip-Chip Chip-on-Board (FCOB) technologies:
- Dual White FCOB Strips: By flip-chip mounting 576 to 840 micro-chips directly onto the FPC under a continuous phosphor silicone matrix, FCOB eliminates visible light spots. This enables smooth, linear light diffusion even inside shallow aluminum channels (less than 6mm depth) without requiring frosted covers.
- Dual White SMD Strips: SMD2835 dual-chip strips deliver maximum lumen efficiency (up to 140 lm/W). They remain the preferred choice for indirect cove lighting, primary architectural illumination, and cuttable LED backlight sheets where high output and long-distance projection are required.
Architectural Specification & Performance Comparison Matrix
The table below provides engineering parameters across Covek's primary Dual White and architectural lighting product categories for OEM buyers, engineering contractors, and lighting consultants:
| Product Category | LED Type & Density | Input Voltage | CCT Range & Binning | Luminous Efficacy | Max Run Length | Primary B2B Application |
|---|---|---|---|---|---|---|
| Dual White FCOB Strip | Flip-Chip (576/640 leds/m) | DC24V / DC12V | 2700K + 6500K (<3 SDCM) | 100 – 120 lm/W | 5 meters (Single Power Feed) | Shallow Profiles, Cabinet Coves, Luxury Retail |
| DC48V Ultra-Long Strip | SMD2835 / SMD5050 | DC48V Constant Voltage | 2700K – 6500K Dynamic | 120 – 140 lm/W | 30 – 50 meters (Zero Voltage Drop) | Hotel Corridors, Airport Lighting, Commercial Malls |
| Cuttable CCT LED Sheet | SMD2835 Matrix (250x250mm) | DC24V Circuit | 2700K – 6500K Tunable | 110 – 130 lm/W | Modular Array (Expandable) | Translucent Marble, Onyx Slabs, Acrylic Sign Boxes |
| Dual White Neon Flex | SMD2835 Silicone Extrusion | DC24V / DC12V | 2700K + 6500K CCT | 80 – 95 lm/W | 10 meters | Outdoor Building Facades, Signage, IP67 Landscapes |
| RGBCCT 5-in-1 Sheet | SMD5050 5-in-1 Chip | DC24V System | RGB + 2700K + 6500K | 90 – 110 lm/W | Modular Interconnect | Bar Counter Backlighting, Entertainment & Hospitality |
Global B2B Procurement Trends & Technological Roadmaps (2025–2030)
As commercial lighting procurement shifts toward sustainable building standards (such as WELL Building Standard v2 and LEED v4.1), global distributors and procurement managers must adapt to several clear trends:
1. Circadian Rhythm & Human-Centric Lighting (HCL) Compliance
Modern commercial real estate requires lighting systems that mirror natural daylight transitions. High-tier office environments and luxury hospitality venues are mandating Dual White strips that offer smooth spectrum shifts from warm 2200K evening tones to energizing 6500K daylight white. Covek's customized spectrum tuning helps OEM partners deliver WELL-certified products with optimal Equivalent Melanopic Lux (EML) ratings.
2. Transition to 48V Extra-Low Voltage Architectures
While DC24V remains the residential benchmark, commercial projects are rapidly adopting DC48V ultra-long linear LED systems. Operating at 48 volts cuts system current ($I = P/V$) in half compared to 24V. This dramatic reduction in resistive line heat allows continuous LED tape runs up to 50 meters from a single power source. This reduces overall power supply counts, cuts copper wiring labor costs by over 40%, and completely eliminates visible end-to-end dimming caused by voltage drop.
3. Universal Wireless & DALI-2 DT8 Control Integration
Procurement buyers are moving away from proprietary dimming protocols toward open-standard ecosystems. Dual White systems now require seamless compatibility with DALI-2 Device Type 8 (DT8)—which controls color temperature and dimming intensity over a single DALI address—as well as Matter, Casambi, Zigbee 3.0, and Tuya smart controllers.
Why Global Buyers Choose Covek: Enterprise Advantage & Quality Rigor
Established in 2011 in Longhua District, Shenzhen, Shenzhen Covek Lighting Co., Ltd. operates an advanced 5,175 m² manufacturing facility with 133 skilled technicians and dedicated R&D personnel. As a TÜV Rheinland verified manufacturer with ISO 9001 compliance, we serve over 2,000 corporate clients across North America, Western Europe, and Northern Europe.
Complete OEM / ODM Flexibility
Custom PCB width (3mm to 500mm), tailored LED chip density, customized voltage profiles, specialized waterproof jackets (IP20 to IP68), and private-label retail packaging.
100% Quality Testing & Traceability
Every single batch undergoes automated optical inspection (AOI), 4-hour high-temperature aging tests, integrating sphere photometric calibration, and waterproof pressure immersion testing before dispatch.
3-Year Warranty & Fast Response
We stand behind our industrial production with an ironclad 3-year warranty policy. All engineering inquiries and quality feedback receive action plans within 24 hours.
B2B Procurement FAQ (Frequently Asked Questions)
Q1: What is the Minimum Order Quantity (MOQ) for OEM custom Dual White strips?
Standard LED sheets start at just 1 piece for sample testing. Most standard FCOB and Dual White SMD strips have an MOQ of 5 meters. Fully customized OEM items (specific PCB color, custom CCT tuning, private label packaging) typically start at 100 to 200 meters.
Q2: How do you prevent color temperature shift between different orders?
We maintain strict 3-Step MacAdam Ellipse LED binning directly from chip encapsulators. Each order's BIN code is logged in our ERP system, allowing us to match exact color bins for repeat orders up to 24 months later.
Q3: What certifications do Covek LED products possess for North America and Europe?
Our LED products hold CE, RoHS, EMC, UL, TÜV, ERP, and BIS documentation tailored to specific target markets. Production operates under an ISO 9001 certified management system, verified onsite by TÜV Rheinland.
Q4: Can Dual White LED sheets be cut on site during marble installation?
Yes. Our cuttable Dual White LED sheets feature a modular matrix grid FPC. Installers can cut the sheet along marked cut lines in both horizontal and vertical directions (every single LED or block of LEDs), tailoring the sheet precisely to intricate countertop shapes without interrupting circuit continuity.
Q5: Should I specify 24V or 48V for my commercial hotel project?
For standard room coves or runs under 10 meters, 24V is ideal. For long corridors, grand lobbies, or outdoor perimeter lighting exceeding 20 meters, specifying 48V reduces power feed drop-offs and cuts driver installation costs dramatically.
Q6: What is the lead time for standard wholesale and custom ODM orders?
Standard sample orders ship within 3-5 working days. Mass production bulk orders (1,000m to 10,000m) are delivered within 12-15 days. Expedited production is available for time-sensitive commercial projects.
Partner with a Verified OEM/ODM LED Factory
Need custom Dual White FCOB strips, cuttable LED sheets, or specialized architectural linear profiles? Contact our engineering team for factory-direct pricing, IES files, and free sample kits.
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