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Exhibit 21

AXIALL CORPORATION
Subsidiaries—As of February 28, 2013

Company Name |  | Jurisdiction of Incorporation or Organization
--- | --- | ---
Axiall Corporation |  | Delaware
1299239 Ontario Limited [HoldCo] |  | Ontario
6630987 Canada Inc. [Vaughan East] |  | Canada
6632149 Canada Inc. |  | Canada
Advanced Profiles, S.A. de C.V. |  | Mexico
Axiall, LLC |  | Delaware
Bluegrass Products, LLC |  | Delaware
Dartmouth Extrusions Limited |  | Ontario
Eagle Controlled 1 Canadian Spinco, Inc. |  | Canada
Eagle Controlled 2 Ohio Spinco, Inc. |  | Delaware
Eagle Holdco 3 LLC |  | Delaware
Eagle Natrium LLC |  | Delaware
Eagle Pipeline, Inc. |  | Louisiana
Eagle Spinco Inc. |  | Delaware
Eagle US 2 LLC |  | Delaware
Exterior Portfolio, LLC |  | Ohio
Georgia Gulf Lake Charles, LLC |  | Delaware
Great River Oil & Gas Corporation |  | Delaware
Le-Ron Plastics Inc. |  | British Columbia
Novo Capital, Inc. |  | Nevada
Novo Management Inc. |  | Nevada
PHH Monomers, LLC |  | Louisiana
Plastic Trends, Inc. |  | Michigan
RBS (U.S.A.) Limited |  | Delaware
Rome Acquisition Holding Corp. |  | Nova Scotia ULC
Rome Delaware Corporation |  | Delaware
Royal Group Sales (USA) Limited |  | Nevada
Royal Group, Inc. |  | Canada
Royal Mouldings Limited |  | Nevada
Royal Outdoor Products, Inc. |  | Indiana
Royal Plastics Group (U.S.A.) Limited |  | Delaware
Royal Railings, LLC |  | Pennsylvania
Royal Vinylbilt Limited |  | Ontario
Royal Window and Door Profiles Plant # 13 |  | Pennsylvania
Royal Window and Door Profiles Plant # 14 |  | Washington
Royal Window Coverings (USA) L.P. |  | Texas
Roybridge Financing Trust |  | Quebec
RS Cogen, L.L.C. |  | Louisiana
Taiwan Chlorine Industries, Ltd. |  | Taiwan
Vinyl Solutions, LLC |  | Delaware

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Exhibit 21

AXIALL CORPORATION Subsidiaries—As of February 28, 2013