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SUNLU

MaterialsWuhu, Anhui, ChinaFounded 2013· One of 1019 Materials companies tracked by AMPulse

Chinese manufacturer of 3D printing filaments, resins, and accessories operating under the SUNLU brand, with a global e-commerce-driven sales model.

CEO / Founder
Kun Jiang (蒋昆)
Team Size
1001-5000
Stage
Public
Total Funding
$13.8M
Latest Round
Series B
Key Investors
深圳高新投 (Shenzhen Hi-Tech Investment); 合钧成长创投 (Hejun Growth Venture); 安徽省春谷3D打印智能装备产业技术研究院有限公司; 深圳市人才创新创业二号股权投资基金; 湖南出版投资; 深圳市小禾创业投资合伙企业

Technology & Products

Key Products

FDM filaments (PLA, PLA+, Silk, Wood, ABS, PETG, PA, PC, PVA, PEEK); LCD photopolymer resins; 3D printers; 3D printing pens; filament dryers; UV curing stations; AMS accessories

Technological Advantage

Vertically integrated manufacturing with 170+ automated production lines; 200+ IP filings including 41 invention patents; self-developed material formulations; ±0.02mm diameter precision; dual-brand (SUNLU) and ODM/OEM business model.

Patent position

SUNLU has filed 53 patent families across all years, compared with 30 filed by eSUN and 28 by Polymaker. AMPulse analysis

Filing momentum
38 families filed 2022–2024, 4 in 2019–2021
Filed in
CN 100%
Named competitors, AM patent families
eSUN 30Polymaker 28

53 AM patent families in total. Recent years are still being published, so read a filing change against the same-office figure.

Differentiation

Value Proposition

High-quality, affordable 3D printing consumables (FDM filaments and LCD resins) with tight diameter tolerance (±0.02mm), anti-tangle spooling, and broad e-commerce availability worldwide.

How They Differentiate

Largest production scale among Chinese consumer 3D printing filament makers; tight diameter tolerance (±0.02mm); anti-tangle spooling; Amazon Best Seller positioning (PLA #1 on Amazon US); dual production bases (Wuhu + Zhongshan) with 8,000-ton annual capacity expansion underway.

Market & Competition

Target Customers

Consumer/hobbyist 3D printer users, makers, designers, SMEs, and educational institutions globally, primarily reached via Amazon, eBay, AliExpress, and Shopify.

Industry Verticals

Consumer 3D Printing; Education; Prototyping; Hobbyist/Maker; Small Business Manufacturing

Competitors

eSUN (Shenzhen Guanghua Weiye); Polymaker (Suzhou); Kexcelled

Growth & Milestones

Growth Metrics

2023 revenue: ¥4.68亿; 2024 revenue: ¥7.63亿; 2025 revenue: ¥12.83亿; 2025 H1 revenue: ¥5.25亿; 2023 net profit: ¥43.91M; 2024 net profit: ¥61.29M; 2025 net profit: ¥162.89M; 2025 H1 net profit: ¥70.74M; Gross margin: 37-40%

Major Milestones

2013: Founded in Zhuhai (珠海市三绿实业有限公司); 2018: 安徽三绿科技股份有限公司 established in Wuhu, Anhui; 2019: World-first anti-tangle spooling filament launched; 2021: Internal restructuring, Anhui entity becomes group HQ; 2022: Series A and Series B funding completed; 2022: National "专精特新小巨人" recognition; 2026-01: Series B+ round funding; 2026-05-21: Listed on NEEQ (code 874975); 2026-06-22: ChiNext IPO application accepted by Shenzhen Stock Exchange

Notable Customers

Amazon US Best Seller #1 in PLA filament category; serves 50+ countries globally via Amazon, eBay, AliExpress, and Shopify

https://www.sunlu.com

Recent coverage of SUNLU

AM patents

AM-relevant patents linked to this company.

Patents
53
Granted
7
Families
53

Leading domains: process (53), material (11), equipment (9)

Filings by year: 2025: 11 · 2024: 14 · 2023: 13 · 2022: 11 · 2019: 4

  1. 3D printing filament clamping and welding mechanism117227183 · CN
  2. 3D printing consumables used as support materials and their preparation methods121628325 · CN
  3. 3D printing pen easy to operate and control method thereof116945606 · CN
  4. Filament extruding device for 3D printing consumable processing111070614 · CN
  5. Photosensitive resin supply method of photocuring 3D printer116945598 · CN

Funding rounds

  • Series BUndisclosed2026-01Source
  • Series B近¥1亿元 (~$13.8M)2022-05Lead: 深圳高新投 · Source
  • Series AUndisclosed2022-02Source

Why this company matters

AMPulse analysis, not a company disclosure

SUNLU develops and manufactures 3D printing materials, including filaments and photopolymer resins, alongside filament dryers, 3D pens, and FDM 3D printers. Founded in 2013 and headquartered in Zhuhai, Guangdong, with a production base in Wuhu, Anhui, the company positions itself as a supplier of affordable, high-quality consumables for the desktop 3D printing market. Its core technology centers on material extrusion (MEX), covering common thermoplastics such as PLA, PETG, and TPU, as well as specialty filaments.

The company is best known for its FilaDryer series, a line of filament drying accessories that address a common pain point in FDM printing: moisture absorption leading to print defects. The FilaDryer S2, which has won design awards, reflects SUNLU's focus on practical, user-oriented innovation. In-house R&D and large-scale manufacturing enable cost control and quality consistency, supported by a global distribution network that includes e-commerce platforms like Amazon and AliExpress.

SUNLU's target customers are 3D printing hobbyists, professionals, educators, designers, and small businesses. Its products are used in academic research, with collaborations noted with institutions such as Huazhong University of Science and Technology. The company competes with ANYCUBIC, Creality 3D, and Dremel in the consumables space, differentiating through its filament drying technology and broad, affordable product range.

A strategic moat lies in SUNLU's early and sustained focus on filament drying, a niche that has become increasingly important as desktop 3D printing matures. However, the company faces competitive risk from larger Chinese manufacturers that can match pricing and expand into accessories. Its reliance on e-commerce and reseller channels also exposes it to platform dynamics and margin pressure. SUNLU has raised $15.7 million from Shenzhen HTI Group, signaling investor confidence in its market position.