I think maybe because Dennis/ Alexander Dennis never catch on in
SG, in HK, there are no problem with them, infact, since Dennis
Dragon era, they have sent on site technicians to Hong Kong, for a
while Dennis trident surpass sales of VSO in HK, even for the B9TL,
Enviro 500 outsold them to KMB, btw, I think SG should try the
Wright B9TL, their interior is really high quality and quiet
too.