- Denmark Sto Danmark A/S
- Germany Sto SE & Co. KGaA
- Germany StoCretec GmbH
- Germany Sto Industrie
- Austria Sto Ges.m.b.H.
- Switzerland Sto AG
- France Sto S.A.S.
- Sweden Sto Scandinavia AB
- Norway Sto Norge AS
- Finland Sto Finexter Oy
- Denmark Sto Danmark A/S
- Italy Sto Italia Srl
- Belgium Sto NV
- Czech Republic Sto s.r.o.
- Slovakia Sto Slovensko, s.r.o.
- Poland Sto sp. z o.o.
- Hungary Sto Építõanyag Kft.
- Netherlands Sto Isoned bv
- Spain Sto SDF Ibérica S.L.U.
- Slovenia Sto Ges.m.b.H.
- Croatia Sto Ges.m.b.H.
- Serbia Sto Ges.m.b.H.
- Germany GEPADI Fliesen GmbH
- Germany JONAS Farben GmbH
- Germany Liaver GmbH & Co.
- Germany STRÖHER GmbH
- Germany Südwest Lacke + Farben GmbH & Co. KG
- Germany Verotec GmbH
- Germany VIACOR Polymer GmbH
- Germany INOTEC GmbH
- Australia Unitex Australia Pty Ltd
- China Shanghai Sto
- Canada Skyrise Prefab Building Solutions Inc.
- Canada Sto Canada Ltd.
- Colombia STO COLOMBIA SAS
- Spain Beissier S.A.U.
- Czech Republic STOMIX, spol. s r.o.
- Turkey Sto Yapı Sistemleri San. ve Ticaret A.Ş.
- United States Sto Corp.
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