Most of the public bus in Hanoi are Korea Products, including Daewoo and Hyundai.Only exception are those Mercedes CityStar Euro 2 on route 32, while their air condition are not as cool as those Korea products!
And there are some "Toyota Coaster" like minibus in the fleet, while I can't identify their manufacturer - seems longer than 7m and shorter than 7.7m, not standard Coaster - come from China or Korea?
I remember the HK version is made specially for HK and Macao market, they actually start off as the LWB Coaster, and then sent to a modifier in Japan to lengthen it. therefore, they look little odd.