... China 3,Professional manufacturer 4,High fire-fighting effciency 1,BC powder extinguishing agent/sodium bicarbonate2,Packaging: 25kg ... foam concentrate and aqueous film-forming foam concentrate.Storage:1. sealing, cool, indoor, dry and vent under 0 ... Quality data: approvals and listings ( Chinese Standard GB4066.1-2004) listItemsTechnical data1Content of Sodium Bicarbonate, %Value published by the ...