What kind of stabilizer grades are porpular for PVC pipe&profile?

What kind of stabilizer grades are porpular for PVC pipe&profile?

This depends on area:
Europe: profile = Ca/Zn, some Pb until end of next year; pipe Ca/Zn, OBS and some Pb until end of next year
China; CIS: Mainly Pb but already some above mentioned alternatives
North America: Mainly Tin, no Pb, rarely Ca/Zn
Australia: Ca/Zn, OBS.
Africa/Arabia: Mainly Pb
Turkey manket: There is a significant trend to switch to Lead-free, stronger than in Arabian area less strong compared to Europe.