California Air Resources Board certification
GASOLINE ENGINE:
WM152F(1.1KW),WM154F(1.2KW),WM152F,WM154F,
WM152F-M(1.4KW),WM154F-M(1.6KW),WM152F-M,WM154F-M,WM168FB(3.6KW),WM168FB,WM173F(5.5KW),WM177F(5.8KW),WM173F,WM177F，WM188F(7.5KW)，WM190F(8.7KW), WM188F，WM190F