Weichai Gas engine Wp12NG380E40 

Bus: 
WP10/WP6/WP4 National III Bus Diesel Engine

WP12 III / Euro IV

WD615 series passenger cars using diesel
226B series passenger cars diesel
WT615/226B series of passenger cars with gas engines

Truck: 
WP10/WP6/WP4 National III truck with diesel engine

WP12 III / Euro IV 
WD12 series truck diesel engines
WD615 series truck diesel engines
226B series trucks use diesel

Power generation: 
WEICHAI DEUTZ 226B series generating diesel engine
WD615/WD618 series of power generation diesel engine

Marine's:
WP12C series marine diesel engine
WEICHAI DEUTZ 226B series marine diesel engine
WD615 series marine diesel engine

Agricultural:
WEICHAI DEUTZ 226B series of agricultural diesel engine