On 3 November 2017, the Mayor of San Francisco has signed the Ordinance amending the Environment Code to ban the sale in San Francisco of Upholstered Furniture and Juvenile Products made with or containing as added Flame Retardant Chemical (File number: 170867). This Ordinance shall become effective on 3 December 2017.

You could find more information for the Ordinance from below link:

San Francisco/California/USA - Passed the Ordinance to Prohibit the Upholstered Furniture and Juvenile Products containing Flame Retardant