Firstly Tangshan HanWei tell you its full name as follow:

DPF=Diesel Particulate Filter

SCR=Selective Catalytic Reduction

Considering environment safety, now more and more people is focus on environmetal protection, we can regard DPF & SCR as a part of auto parts(exhausting system).

Selective Catalytic Reduction (SCR) is an advanced active emissions control technology system that injects a liquid-reductant agent through a special catalyst into the exhaust stream of a diesel engine. The reductant source is usually automotive-grade urea, otherwise known as Diesel Exhaust Fluid (DEF). The DEF sets off a chemical reaction that converts nitrogen oxides into nitrogen, water and tiny amounts of carbon dioxide (CO2), natural components of the air we breathe, which is then expelled through the vehicle tailpipe.

The clever thing about a DPF is that not only does it trap and hold particulates but it can also burn them, turning them into a harmless ash that is emitted through your car’s exhaust system. It does this by burning them at a high temperature in a process called DPF regeneration.

DPF & SCR firing work require high tech under higher temp (nearly 1600 degree Celsius), thus the industrial kiln / furnace also need  pretty good performance kiln furniture/ spare parts, that is Silicon Carbide(Re-SiC) ceramics, Tangshan HanWei (FDL)is China right manufacturer for SiC kiln parts, now servicing for China 3 famous DPF & SCR Manufacturers. Want more info, don’t hesitate to contact us by HW@HW-BIZ.COM, tks!