EXHIBIT 21

SUBSIDIARIES OF THE REGISTRANT

Subsidiary |  | Jurisdiction
Axiall Holdco, Inc. |  | Delaware
Axiall, LLC |  | Delaware
Georgia Gulf Lake Charles, LLC |  | Delaware
Royal Plastics Group (U.S.A.) Limited |  | Delaware
Rome Delaware Corporation |  | Delaware
Rome Acquisition Holding Corporation |  | Nova Scotia ULC
Royal Window and Door Profiles Plant 13, Inc. |  | Pennsylvania
Royal Window and Door Profiles Plant 14, Inc. |  | Washington
Plastic Trends, Inc. |  | Michigan
Royal Building Products (U.S.A.) Inc. |  | Delaware
Royal Group, Inc. |  | Canada
6630987 Canada Inc. |  | Canada
Eagle Spinco Inc. |  | Delaware
Axiall Taiwan Ltd |  | Taiwan
Eagle Holdco 3 LLC |  | Delaware
Eagle US 2 LLC |  | Delaware
Axiall Canada, Inc. |  | Canada
RS CoGen LLC |  | Louisiana
Axiall Ohio, Inc. |  | Delaware
Eagle Pipeline, Inc. |  | Louisiana
PHH Monomers, LLC |  | Louisiana
Vinyl Solutions, LLC |  | Delaware
6632149 Canada Inc. |  | Canada
1299239 Ontario Limited |  | Ontario
Royal Vinylbilt Limited |  | Ontario
Roybridge Financing Trust |  | Quebec
Eagle Natrium LLC |  | Delaware
Taiwan Chlorine Industries, Ltd. |  | Taiwan
Shriram Axiall Private Limited |  | India
Axiall Foundation, Inc. |  | Georgia
Axiall PAC, Inc. |  | Georgia
Axiall Noteco, Inc. |  | Delaware
Advanced Profiles S.A. de C.V. |  | Mexico
Axiall France SARL |  | France
Axiall Limited Partnership |  | Canada
Mexaxiall, S. de R.L. de C.V. |  | Mexico