Exhibit 22.1

The following is a listing of subsidiaries that guarantee the DXP Enterprises, Inc. Credit Facilities (the "ABL Revolver" and “Term Loan B Agreement”) issued by DXP Enterprises, Inc.

SUBSIDIARY GUARANTORS OF GUARANTEED SECURITIES

Entity			Jurisdiction of Organization
PUMP-PMI, LLC			Delaware
PMI OPERATING COMPANY, LTD.			Texas
PMI INVESTMENT, LLC			Delaware
INTEGRATED FLOW SOLUTIONS, LLC			Delaware
DXP HOLDINGS, INC.			Texas
BEST EQUIPMENT SERVICE & SALES COMPANY, LLC			Delaware
B27 HOLDINGS CORP.			Delaware
B27, LLC			Delaware
B27 RESOURCES, INC.			Texas
PUMPWORKS 610, LLC			Delaware