... of unburned air, CO,NOx, HC Our company boasts first class automobile exhaust catalyst automatic production line, ... such as Yixin non-metal mechanical Co., Ltd. and Wangzi Ceramic Co.,Ltd.. We always use 400cpsi or ... light-off temperature is less than 250 for CO, HC and NOx. We have the technology for ... Pd-Rh , pt-pa, and single Pd,pt, catalyst and so on, for gasoline engines. For different car ...