Reduce NOx, Smoke & Particulates — Custom Exhaust Aftertreatment for Diesel Gensets & Marine Engines

SHUOCHUN designs and manufactures DOC, DPF and SCR systems for 50kW–10MW diesel engines, compliant with EPA Tier 4, EU Stage V and IMO Tier III. Factory-direct OEM/ODM.

Designed to remove black smoke, particulate matter and carbon monoxide from diesel engine exhaust.

Dedicated to cutting nitrogen oxide emissions to meet strict global emission regulations.

Designed to remove particulate matter, black smoke, nitrogen oxides and carbon monoxide from diesel engine exhaust.

⚠️ Struggling to meet tightening emission standards

✅ Certified DOC/DPF/SCR systems compliant with EPA Tier 4, EU Stage V and IMO Tier III

⚠️ No complete DOC/DPF/SCR solution from one supplier

✅ One-stop integrated aftertreatment, designed and tested as one package

⚠️ Poor overseas technical support and after-sales service

✅ English-speaking engineers, remote diagnostics and on-site commissioning

⚠️ Hard to match aftertreatment to your engine power

✅ Custom sizing from 50 kW to 10,000 kW (10 MW) for gensets and marine engines

⚡ Stationary Diesel Generator Sets

No standard models — fully customized to your generator's power, exhaust flow and installation space.

Power range: 50 kW – 10,000 kW | DOC / DPF / SCR | EPA Tier 4, EU Stage V

⚓ Marine Vessel Exhaust Treatment

Inland & coastal vessel solutions tailored to IMO Tier III requirements.

Power range: 130 kW – 10,000 kW | DPF + SCR | IMO Tier III

🛡️ Full Global Regulatory Compliance

Certified solutions for EPA Tier 4, EU Stage V, IMO Tier III and MARPOL Annex VI — all major global emission standards covered.

⚡ 50 kW – 10,000 kW Full Power Range

Custom-engineered aftertreatment for any generator or marine engine. No one-size-fits-all — every system sized to your exact application.

🔧 Complete DOC / DPF / SCR Systems

One-stop integrated aftertreatment packages, not just individual components. Stable, reliable and proven in the field.

🌐 Worldwide Technical Support

Factory inspection, OEM mass supply, and on-site commissioning support for global partners, from installation to handover.

🏭 OEM Custom Matching

Custom DOC/DPF/SCR systems designed specifically for your generator or marine equipment product lines. Full technical integration support from initial specification to final installation.

📦 Bulk Supply & Distribution

Stable mass production capacity for global distributors and dealers. Competitive pricing with consistent quality assurance. Flexible MOQ options to support your business growth.

🔧 Engineering Project Partnership

Work with EPC contractors and system integrators for emission retrofitting and new construction projects worldwide. Full project management and on-site technical support.

🎧 Technical Consulting & Support

On-site factory inspection, overseas technical docking, regulatory compliance guidance for all global markets. Expert support for EPA Tier 4, EU Stage V, IMO Tier III certification.

Contact us today to explore how we can optimize your generator systems for a sustainable future. 🌱💡