Man-Gill Chemical Company 
23000 St. Clair Avenue
Cleveland, OH 44117
Phone: (216) 486-5300

Toll free: (800) 627-6422

Fax: (216) 486-1214

Oakite Products, Inc.
50 Valley Road
Berkeley Heights, NJ 07922
Phone: (908) 464-6900

Fax: (908) 464-9250

Quest Chemicals

20525 Detroit Avenue

Rocky River, OH 44116

Phone: (440) 331-1600

Fax: (440) 331-1602

Top Chemical Industries, Inc.

Unit B - 1401 Crown Street

North Vancouver, BC V7J 1G5

Canada

Phone: (604) 904-0400

Fax: (604) 904-0437

Tronex Chemical Corp.

48602 Downing

Wixom, MI 48393

Phone: (248) 449-4075

Fax: (248) 449-4204

Troy Chemical

17040 Rapids Road

Burton, OH 44021

Phone: (440) 834-4408

Fax: (440) 834-1142

Ultrasonics UK
Leaward House 33 Stamford Road
Kettering, North, UK NN14 1BB
Phone: +44(0) 1536746520

Fax: +44(0) 1536746520

Working Solutions, Inc.

2522 Roy Circle

Houston, TX 77077

Toll free: 800-829-4419

Phone: (713) 862-3868

Fax: (713) 862-5591