Exhibit 21

SUBSIDIARIES OF REGISTRANT

The Company’s principal affiliates as of December 31, 2021 are listed below. All other affiliates, if considered in the aggregate as a single affiliate, would not constitute a significant subsidiary.

			Percentage of voting securities directly or indirectly owned by registrant			State or Country of incorporation or organization
Core Composites Corporation			100			Delaware
Horizon Plastics International Inc.			100			Canada