St. Louis Group (SLG) was formed in 2010 and began producing and selling Bolivian antimony trioxide (ATO). Today, SLG is the largest supplier of Chinese-manufactured flame retardants (FRs) in the United States. SLG’s alliance with a global network of suppliers, in combination with domestic manufacturing operations, allows them to offer halogenated and non-halogenated solutions. St. Louis Group now has one of the broadest lines of flame retardants and smoke suppressants, including many custom offerings. Their flame retardants are available in the following chemistries: brominated, phosphorus, chlorinated, non-halogenated, antimony, and zinc. 

Fire and flame resistance of plastics, elastomers, coatings, and building materials 
Regulatory and use restrictions of halogenated flame retardants 
Availability of flame and fire retardants in solid and liquid forms 
Long lead time or the increasing cost of antimony oxides or other flame retardants