- SEKISUI AMERICA CORPORATION
- ALLEN EXTRUDERS, LLC.
- HEITKAMP, INC
- KYDEX, LLC.
- SEKISUI DIAGNOSTICS, LLC.
- SEKISUI NORDITUBE, INC.
- SEKISUI PRODUCTS, LLC.
- SEKISUI S-LEC AMERICA, LLC.
- SEKISUI S-LEC MEXICO S.A. de C.V.
- SEKISUI SPECIALTY CHEMICALS AMERICA, LLC.
- SEKISUI SPR AMERICAS, LLC.
- SEKISUI TA INDUSTRIES, LLC.
- SEKISUI VOLTEK, LLC.
- XENOTECH, LLC.
*Consulldated subsidiary














