LSB Industries (LXU) 10-Q 2010 Q2 Quarterly report

Exhibit 21.1

LSB INDUSTRIES, INC.

SUBSIDIARY LISTING

Revised April 1, 2010

LSB INDUSTRIES, INC. (Direct subsidiaries in bold italics)

Consolidated Industries Corp.

Summit Machine Tool Manufacturing L.L.C. (f/k/a Summit Machine Tool Manufacturing Corp.)

LSB-Europa Limited

ClimateCraft Technologies, Inc.

Cherokee Nitrogen Holdings, Inc.

Pryor Chemical Company

Chemical Transport L.L.C.

ThermaClime, L.L.C. (f/k/a ThermaClime, Inc.)

The Climate Control Group, Inc.

XpediAir, Inc.

International Environmental Corporation

Climate Master, Inc.

ClimateCraft, Inc.

ThermaClime Technologies, Inc.

CEPOLK Holdings, Inc.

ClimaCool Corp.

TRISON Construction, Inc.

Koax Corp.

LSB Chemical Corp.

Northwest Financial Corporation

El Dorado Chemical Company

Chemex I Corp.

Cherokee Nitrogen Company

El Dorado Nitric Company

El Dorado Acid, L.L.C. (General Partner of El Dorado Nitrogen, L.P.)

El Dorado Nitrogen, L.P. (1% ownership)

El Dorado Acid II, L.L.C. (Limited Partner of El Dorado Nitrogen, L.P.)

El Dorado Nitrogen, L.P. (99% ownership)

Prime Financial L.L.C. (f/k/a Prime Financial Corporation)

Prime Holdings Corporation

Note: All subsidiaries are Oklahoma corporations, except for Climate Master, Inc., which is a Delaware corporation, and El Dorado Nitrogen, L.P,, which is a Texas limited partnership.