Language: English

1. What hazardous substance does the automobile exhaust has? a. Nitrous oxides (NOx): It can form acid rain and photochemical smog. b. Particulate matter: It can cause respiratory and cardiovascular diseases to people. 2. What is SCR after treatment system? …

After more than 150 equipments was exported to America in 2013, another 10 set of Chinese high-tech crawler excavator with full electric-controlled QSB engine are entering North American market, these excavator are planned to work in one of the petroleum …