About SULONG

Jiangsu Sulong Eco-Technologies Co., Ltd. is a National High-Tech Enterprise and a provincial-level "Specialized, Refined, Unique & Innovative" SME. We deliver 100% in-house, automated production of high-grade composite polymer mining & industrial ventilation ducts (PVC/PE/TPU/TPO), with all processes self-produced and no outsourced manufacturing. Equipped with industry-leading seamless one-piece forming technology, our products feature tensile strength up to 4300N and carry internationally recognized certifications including ISO 9001, ISO 14001, ISO 45001, EU ATEX, CE, US NFPA 701, as well as test reports certified by Australian NATA laboratories. We are a long-term strategic supplier for top global mining enterprises including Zijin Mining and JCHX Mining, supporting their mining projects worldwide.
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World-Class Team
Graduates from top universities worldwide
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Advanced R&D
Self-developed
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Innovation Focus
Multiple innovative technologies

Our Products

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Spiral Ventilaiton Duct

Spiral Ventilaiton Duct

Model: 7858696203
Parameters: 8523103473

Flexible Ventilation Duct

Flexible Ventilation Duct

Model: 7374153694
Parameters: 1137644559

Company Gallery

Certifications & Awards

Quality Management System Certification
Quality Management System Certification
SGS Test Report
SGS Test Report
EU ATEX Type Examination Certificate for Explosion-proof Ventilation Duct
EU ATEX Type Examination Certificate for Explosion-proof Ventilation Duct

Success Stories & Case Studies

Xi'an-Chengdu Railway Project

Xi'an-Chengdu Railway Project

The Xi'an-Chengdu Railway project, undertaken by China Railway 2nd Engineering Group, is one of the largest and most technically challenging projects currently under construction for the group. It is also a crucial component of the national "Eight Vertical and Eight Horizontal" high-speed rail network, with a total length of 19.68 kilometers.
Long tunnel, low air leakage rate

Location: CN 📦 Quantity: 20 km
Melbourne Metro Rail Project

Melbourne Metro Rail Project

The Melbourne Metro Rail Project involves the construction of a 9km-long tunnel within Melbourne, Australia, connecting the Sunbury and Dandenong railway route. Construction is scheduled to begin in late-2018 and operations are expected to start in 2025. We have have supplied the vent ducts of 1500mm diameter since 2019.
High flame retardancy, easy installation, flexible large-diameter ventilation duct, meets strict safety requirements for underground tunnel projects

Location: AU 📦 Quantity: 9 km
Trunk Road T2 Tunnel

Trunk Road T2 Tunnel

The Trunk Road T2 Tunnel is an important component of Hong Kong Route 6 and a key undersea tunnel project connecting Kowloon and Tseung Kwan O. Constructed using tunnel boring machines (TBM), it avoided large-scale land reclamation, minimizing its impact on the marine environment. It is approximately 3.4 kilometers long, including about 2.1 kilometers of undersea tunnel.
High flame retardancy, easy installation, flexible large-diameter ventilation duct, meets strict safety requirements for urban rail tunnel projects

Location: HK 📦 Quantity: 5 km
Guangxi Beibu Gulf Project

Guangxi Beibu Gulf Project

The project undertaken by China Water Resources and Hydropower 14th Engineering Co., Ltd. in the Beibu Gulf region of Guangxi is a major national water conservancy project with a total length of 30 kilometers. The project uses domestically advanced slurry balance shield tunneling machines (about 4 meters in diameter) to specifically address the challenges of the Beibu Gulf region's abundant water and complex geology.
High flame retardancy, easy installation, flexible large-diameter ventilation duct, meets strict safety requirements for urban rail tunnel projects

Location: CN 📦 Quantity: 30 km
Global Tier-1 Mining Conglomerate and EPC Contractor

Global Tier-1 Mining Conglomerate and EPC Contractor

100% stable, continuous operation with a zero defect and rejection rate, ensuring the supply of fresh underground air and compliance with safety standards for multinational mine audits.
The 700 g/m² high-strength flame-retardant series features zero-leakage seamless construction and complies with international standards (SGS, ATEX, NFPA 701). It also offers highly reliable transcontinental multimodal logistics.

Location: GLOBAL 📦 Quantity: 20km per year

Company & Product Videos

Company Introduction & Factory Tour

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Product Demonstration - Kestrel K-1

⏱ Duration: 5:12 | 👁 Views: 28,450

Technology Innovation Showcase

⏱ Duration: 4:30 | 👁 Views: 12,890

Customer Testimonials & Success Stories

⏱ Duration: 6:20 | 👁 Views: 9,650

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