this is too weird.
i've been living in sai kung or over 5 years. not in-town but near silverstrand.
in that case, Tai Sun Canvas Awning in SK town definitely has wood chips.
for lump charcoal in town besides Fusion, in See Chueng Street (cafe alley in sai kung), there is a beverage wholesaler that i've seen carry 50kg+ lump charcoal in these white bags. i've never sought to buy it myself but i think it's worth asking. i don't know the exact address, but if you look for a beverage wholeseller, you can't miss it on that little street.
for meats in sai kung, there is a new shop on the corner of mcdonalds called Aunew Food +852 6061 9147. They sell a lot of nice sub-primals from australia. and since their opening, they are really cheap for chilled beef. if you go there, ask them to join their whatsapp group.
beyond that, like packer briskets, whole bone in rib-eye racks, you will need to buy from restaurant suppliers like angliss. i have a few contacts if you want. however they need to ship to business addresses and you may need to present a BR.
if you fancy japanese a4/a5, they are easily bought in frozen meat shops or this online shops..
for salmon, i only buy ora king salmon from a facebook shop called mode de vie. it only comes chilled direct from New Zealand.
and general fish and seafood, i go to the boat pier in sai kung, nothing beats local caught and live.
i don't remember much about my delivery besides paying some fees to the agent and truck delivery. it may have been easier for me to send it to my office, and then moving it up a flight of stairs at home was a PITA..