"China" and pottery of all descriptions was a huge industry in Lowland Scotland. In the 19th century it was the second largest industry in Glasgow after shipbuilding. Hard to believe but there were huge potteries in the city and some of them produced the most exquisite porcelain too, the Verreville Pottery at the Broomilaw/James Watt St was in existence in the late 1700's. J & M.P.Bell was probably the largest pottery in the city. Other potteries in Scotland were at Alloa, Bo'ness, Greenock, Cumnock, Kirkcaldy, Portobello, Musselburgh, Prestonpans and the only one of any size north of Perth, Seaton Pottery in Aberdeen.
It isn't a coincidence that almost all of them were situated at or close to, a sea port. Millions of pieces of Scottish pottery were shipped in the 19th century to the "colonies" of Canada, Australia, India and other places all over the world.