SINOLYN is an automotive-lighting brand primarily associated with headlight retrofit components, particularly projector lenses, Bi-LED and Bi-Xenon systems, LED lighting, and related accessories. The brand operates mainly through international e-commerce and aftermarket automotive-lighting channels rather than as a conventional mass-market OEM supplier.

Publicly available records indicate that the SINOLYN name has been used in the lighting sector since at least 2016. While some business directories describe a Guangzhou-based SINOLYN automotive-lighting business founded in 2018, the corporate relationship between these records is not clearly established in public documentation. 1

The U.S. trademark record identifies Lin Wanqi as the original applicant and owner of the SINOLYN mark registered for lighting-related products. The registration covered LED lighting fixtures, vehicle lighting apparatus, and other lighting equipment. 2

The publicly documented history of SINOLYN reflects its origins in the Chinese aftermarket sector sold internationally.

The earliest strong public record is a U.S. trademark application filed on July 15, 2016. The trademark was registered on March 21, 2017, with Lin Wanqi listed as the owner. The original goods classification included lamps, LED lighting fixtures, vehicle lighting apparatus, and other lighting products. 3

In the Philippines, a later trademark publication from 2023 lists SINOLYN with Lin Wanqi as the applicant. This local registration covers vehicle lights, automobile headlights, motorcycle lights, running lights, and related lighting equipment.

Separate business-information sources describe a SINOLYN automotive-lighting company in Guangzhou, China, reportedly founded in 2018 and involved in manufacturing and supplying automotive lighting-system components. However, authoritative public documentation establishing that entity’s exact legal relationship with the trademark owner is limited. 4

Timeline

• 2016 — SINOLYN trademark filed in the United States. 5
• 2017 — U.S. trademark registered.
• 2018 — Business databases identify a Guangzhou SINOLYN automotive-lighting business from this period.
• 2020s — SINOLYN products become increasingly visible through international aftermarket and e-commerce channels, particularly projector-lens and headlight-retrofit products.
• 2023 — SINOLYN trademark application in the Philippines covers automobile and motorcycle lighting products.

Although the SINOLYN trademark originally covered general lighting products, its current product identity is strongly associated with automotive headlight technology.

Projector Lenses

Projector lenses represent a core category of SINOLYN’s offerings. The range includes:

• 1.5-inch mini projector lenses
• 2.0-inch projector systems
• 2.5-inch projector lenses
• 3.0-inch projector lenses
• Bi-Xenon projectors
• Bi-LED projectors
• Single-beam projectors
• High/low-beam projectors
• AFS (Adaptive Front-lighting System) projector systems
• LED/laser projector systems

For example, SINOLYN’s 3-inch Bi-Xenon products are designed for automotive headlight retrofits and can accommodate H7, D2S, and D2H-type applications depending on the model.

Bi-Xenon Products

SINOLYN maintains a substantial legacy-style Bi-Xenon product range. These systems use a movable shutter or solenoid to provide both low beam and high beam from the same projector unit.

One documented SINOLYN 2.5-inch 9.5-generation product uses H1 HID bulbs and provides both high- and low-beam functions. It is offered in standard and upgraded full-metal configurations. 6

Features promoted across SINOLYN Bi-Xenon products include:

• High/low beam operation
• Projector optics
• Metal reflectors
• Electromagnetic solenoids
• Glass projector lenses
• H1/H4/H7 compatibility depending on model
• Retrofit-oriented mounting systems
• LHD/RHD beam-pattern options on some products

The brand has also developed newer visual designs incorporating “Angel Eyes” and DRL-style elements. 7

Bi-LED Technology

Recently, SINOLYN’s product range has expanded significantly toward Bi-LED projector technology. These projectors integrate LED light sources into a single assembly to provide both high and low beams.

The documented SINOLYN 1.5-inch Pro Mini series includes:

• MD-01 — Bi-LED high/low beam
• MS-01 — Low beam
• DS-01 — Matrix-style high beam
• DS-02 — Spotlight high beam

These models use built-in drivers and active cooling, with specifications including approximately 30–45 W depending on the model. 8

SINOLYN also produces larger 3-inch Bi-LED projectors. One documented AFS model uses multiple LED chips, active cooling, and an automatic-adjustment/AFS system. 9

LED and Laser Lighting

SINOLYN has moved beyond traditional HID/Xenon technology into high-output LED and LED/laser projector systems.

Examples include Bi-LED + laser projector designs marketed for high-output automotive headlight applications. One documented 3-inch system claims approximately 13,000 lux low beam and 36,000 lux high beam at 3 m; however, such brightness specifications are manufacturer claims and should not be interpreted as independent laboratory measurements. 10

The brand’s product ecosystem spans:

Halogen retrofit → HID/Xenon → Bi-Xenon → LED → Bi-LED → AFS/matrix-style systems → LED/laser systems

This progression mirrors the broader evolution of the automotive headlight-retrofit market.

Retrofit Philosophy

SINOLYN products are generally designed around retrofit applications, intended for customers who wish to modify existing headlamps rather than replace the entire assembly.

Typical retrofit work involves:

1. Opening the original headlamp housing.
2. Removing the original reflector/projector.
3. Installing a new projector.
4. Adapting the mounting system.
5. Installing the appropriate LED or HID light source.
6. Connecting the high/low-beam control.
7. Adjusting the beam pattern.
8. Resealing the headlamp.

Several SINOLYN manuals explicitly describe the products as headlight-retrofit equipment and recommend professional installation for complex setups. 11

Engineering Features

Across its product range, SINOLYN emphasizes several technical characteristics:

• Optical Systems: Projector lenses concentrate and shape light into a controlled beam.
• Cut-off Shields: Bi-Xenon and Bi-LED projectors use a cut-off mechanism to create defined low-beam patterns.
• Solenoids: In Bi-Xenon systems, electromagnetic solenoids move the shutter for high beam activation.
• Reflectors: Higher-end versions use metal or aluminum-alloy reflectors. SINOLYN’s 8.0 and 9.5-generation products emphasize upgraded reflector and mechanical components.
• Cooling: Many LED products incorporate fans and heat-dissipation components due to the heat generated by LEDs. 12
• Integrated Drivers: Some newer mini LED projectors feature integrated drivers to simplify installation.

Sizes and Generations

SINOLYN utilizes various projector sizes and generation numbers:

• 1.5-inch: Compact mini LED systems
• 2.0-inch: Compact retrofit projectors
• 2.5-inch: Common retrofit size
• 3.0-inch: Larger, higher-output systems

Version numbers such as 8.0, 9.5, and others serve as product-generation designations within the aftermarket context.

SINOLYN products are marketed as universal or semi-universal retrofit components. Depending on the model, socket compatibility may include:

• H1, H4, H7
• D1S, D2S, D2H, D3S, D4S
• H11, 9005, 9006

Socket compatibility does not guarantee physical fitment; sufficient space inside the headlamp, appropriate mounting brackets, correct wiring, and adequate clearance are required. Documentation describes some 2.5-inch projectors as adaptable to H4/H7 housings and other configurations with adapters.

LHD and RHD Versions

For international markets, including those with different driving sides, some SINOLYN projector products are offered with LHD (Left-Hand Drive) and RHD (Right-Hand Drive) beam patterns. The distinction ensures the headlight beam shape corresponds to the local traffic system. SINOLYN’s documented 3-inch projector range specifies LHD/RHD options on certain models.

Cosmetic Features

SINOLYN participates in the cosmetic side of automotive lighting, offering designs with:

• Angel Eyes
• LED halos
• DRL functions
• Switchback lighting
• Decorative light guides
• “Devil Eye” effects

For instance, its 2.5-inch Bi-Xenon product line includes integrated LED Angel Eyes that function as daytime-running-light elements. 13

SINOLYN’s products are suited for:

• Automotive Enthusiasts: Owners seeking brighter or modern headlights compared to original halogen systems.
• Headlight Retrofit Shops: Professional installers using projector modules for custom conversions.
• Automotive Parts Dealers: Aftermarket distribution of universal products.
• DIY Modifiers: Experienced enthusiasts installing retrofit kits.
• Motorcycle Users: Trademark documentation explicitly includes motorcycle lights.

The brand develops primarily through the global aftermarket/e-commerce ecosystem. Products are found through international online marketplaces like eBay and Alibaba, as well as independent retailers.

An eBay seller operating under the name sinolyn has listed thousands of automotive-lighting products, accumulating significant sales volume with high seller-feedback percentages. 6 Alibaba search results similarly show multiple SINOLYN-branded projector-lens products categorized under automotive lighting. 7

Information regarding SINOLYN’s corporate structure is comparatively unclear. Several different Chinese companies are named in third-party listings as manufacturers or suppliers of products carrying the SINOLYN name, including entities in Shenzhen and Guangdong.

These companies may act as manufacturers, exporters, distributors, contract suppliers, or marketplace sellers rather than the brand owner. The strongest publicly documented trademark information identifies Lin Wanqi as the trademark owner/applicant.

Therefore, SINOLYN is best described as a Chinese automotive-lighting aftermarket brand whose public trademark records identify Lin Wanqi as the owner, while various Chinese companies appear in marketplace documentation associated with individual products. Claims about specific factory ownership require caution due to limited corporate transparency.

SINOLYN occupies a position in the automotive-lighting market distinct from premium OEM suppliers like HELLA or Valeo. It sits closer to the Chinese aftermarket / automotive modification / retrofit-performance segment.

Its value proposition revolves around:

• High light output
• Relatively affordable pricing
• Numerous projector sizes
• Compatibility with existing headlight housings
• Customization options
• Frequent product updates
• Enthusiast-oriented styling
• Bi-LED and Bi-Xenon technology

Comparison with OEM Brands

SINOLYN’s competitive advantage lies in flexibility and aftermarket specialization rather than OEM integration.

Available marketplace evidence suggests SINOLYN has achieved a meaningful presence among automotive-lighting buyers. The eBay seller using the SINOLYN name shows a 99.1% positive feedback rate, with more than 5,000 items sold according to indexed data. Third-party seller information also shows SINOLYN-focused stores with high customer ratings on international marketplaces.

Marketplace ratings primarily measure transaction experiences, not independent laboratory assessments of optical performance or regulatory compliance.

Strengths

1. Broad Product Range: Covers Xenon, Bi-Xenon, LED, Bi-LED, AFS, and LED/laser technologies.
2. Strong Retrofit Focus: Designed specifically for headlight modification.
3. Variety of Sizes: Options for 1.5-, 2.5-, and 3-inch systems.
4. Enthusiast-Oriented Designs: Includes Angel Eyes, DRLs, and styling features.
5. Competitive Pricing: Operates in the Chinese aftermarket ecosystem, often below premium OEM costs.
6. International Availability: Distributed through global e-commerce channels.

1. SINOLYN Trademark of Lin Wanqi – Registration Number 5164649 – Serial Number 87104921 :: Justia Trademarks
2. SINOLYN
3. Intellectual Property Center, 28 Upper McKinley Rd.
4. Sinolyn 3 Inch H7 D2S D2H Single Xenon Low Beam Projector Lenses Instruction Manual
5. Sinolyn 2.5 Inch 9.5 Version Bi Xenon Projector Lenses Instruction Manual
6. sinolyn on eBay
7. Sinolyn 2.5 Car Xenon light Inch 9.5 Version Bi Projector Lenses For H4 H7 Head LED DRL Halo Lenses Accessories Use H1…
8. Sinolyn 4300K 6000K H7 LED H1 D2H D2S H11 9005 9006 Car Headlight Bulbs LED Lamp For Projector Lenses 70W 8000LM Car…
9. Продавец Sinolyn – Китай SellerCheck
10. Магазин SINOLYN Car and Motorcycle Lights – Китай SellerCheck
11. Sinolyn bi-LED AFS のパーツレビュー
12. SINOLYN Car 3.0” HID Bi-xenon Projector Lens Headlight Retrofit Xenon Headlamps
13. Lin Wanqi Trademarks Page 1 :: Justia Trademarks