PBDE is not one chemical, but a group chemicals called polybrominated dibenzyl ethers. They are one of a group called brominated fire retardants (BFR) commonly used in the manufacture of plastics and rubbers to make them fire proof. They are becoming controversial because they may be toxic, particularly to children.
One thing to look out for in foam mattresses is the use of PBDE's. These are flame retardants used to compensate the fact the foam is highly flammable. PBDE's have been banned in Europe and are about to be banned in California. This is because PBDE's or PolyBrominated Diphenyl Ethers have been found in humans. These particles are like the PCB's that were banned a few decades ago. They have been found to accumulate in humans (and animals) and not break down. This has lead to concerns they might be carcinogenic. A pretty safe bet in avoiding PBDE's is buying organic or natural latex mattresses. Wool is also a natural flame retardant as so does not require PBDE's.
AZAL PFC was created in 1996.
Simurq PFC was created in 2005.
Kapaz PFC was created in 1959.
PFC Oleksandria was created in 1991.
Sumgayit PFC was created in 2010.
PFC Kom-Minyor was created in 1957.
PFC Lokomotiv Mezdra ended in 2011.
PFC Lokomotiv Mezdra was created in 1929.
PFC Chernomorets Balchik was created in 1957.
PFC Spartak Pleven was created in 1919.
PFC Spartak Pleven ended in 2009.