• Wheatland Tube Company

• ABT, Inc.

• Brenelle Co. LLC

• CLOW Water Systems Co.

• Creative Systems Inc.

• Crown-Line Plastics

• Dahl Brothers (Canada) Ltd.

• IPEX

• J-M Manufacturing Co., Inc

• JM Eagle

• Jet Stream Plastic Pipe Co.

• Leaside Plumbing & Heating

• Nedlaw Living Walls

• Noble Trade

• REHAU Construction LLC

• Sasco Tubes and Roll Forming Inc.

• Spiro Metal Tube Inc.

• Watts Radiant

• Wirsbo Co.

• Woodbrier Associates, Inc.