Not from HK, but from Japan. I bought one in Vancouver, new, for $135.00 in 1971 when ten-speeds were a novelty. $135 represented a lot of lawns mowed at the time. Used the bike through high school. The charming thing about the Chimo was that it came with an assembly manual with instruction #1:
"Before begin [sic] assembly of Japanese bicycle, one must have peace of mind."
I kept the manual for years but lost it somewhere along the way. I don't think I'll ever forget instruction #1. I've tried to apply that wisdom to other 'assemblies' over the years!
I think that Norco bought Chimo in the mid to late '70s but Norco only seemed interested in the heavier, mass-market bikes, not in the lighter, racing machines.
I saw a Chimo the other day locked up at Dalhousie University. I could not believe my eyes. I'll just say it looked very well used. Brought back many memories.