Win a chain lube system! Scottoiler & Strathclyde University collaboration project.

[bigdamo]

Xinjiang is in NW China.I'd say Gansu, Qinghai are too.

I think your question on" how much do you spend on chain purchases" is umm.

When I purchase a new chain i will also purchase/replace both sprockets.Replacing a worn out chain and not replacing the sprockets at the same time is false economy.

I look at the total price of chain and sprockets.