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.

Industrial diesel generator exhaust stack with black smoke emissions

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Our catalyst support

Diesel Particulate Filter (DPF) white cylindrical honeycomb ceramic substrate

SCR catalyst corrugated honeycomb substrate for NOx reduction

Metal supported catalyst square metallic honeycomb substrate

Diesel Oxidation Catalyst (DOC) coated ceramic honeycomb substrate

Metal supported catalyst

SCR catalyst

Diesel Oxidation Catalyst

Diesel Particulate Filter

DOC+DPF Soot & Particulate Exhaust Purification System for Diesel Gensets & Marine Engines

SCR NOx Reduction Exhaust System for Diesel Gensets & Marine Engines

Integrated DPF+SCR Combined Exhaust Aftertreatment System for Stationary & Marine Diesel Units

DOC+DPF Exhaust Purification System

Custom exhaust aftertreatment systems for stationary diesel gensets & marine diesel engines

SCR NOx Reduction Exhaust System for Diesel Gensets & Marine Engines

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

Integrated DPF+SCR Combined Exhaust Aftertreatment System for Stationary & Marine Diesel Units

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.

Partial case demonstration chart

pain points with solutions: emission standards, system integration, technical support, and power ma

Custom diesel generator exhaust systems and marine vessel exhaust treatment options with power range

Four panels highlighting global compliance, power range, DOC/DPF/SCR systems, and worldwide support

🏭 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.

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