Conflict Minerals Disclosure

From time to time in the manufacture of heat exchangers we may use welding rods that contain conflict minerals (as defined in paragraph (d)(3) of Item 1.01 of Form SD of the Securities Exchange Act of 1934 (“Form SD”)). We conducted a reasonable country of origin inquiry of the manufacturers of such welding rods. Each such manufacturer executed and delivered to us a certification that confirmed, based upon reasonable inquiries and investigations of its supply chain by such manufacturer, that any conflict minerals used in such manufacturer’s welding rods did not originate in the Democratic Republic of the Congo or an adjoining country (as defined in paragraph (d)(1) of Item 1.01 of Form SD) or come from recycled or scrap sources (as defined in paragraph (d)(6) of Item 1.01 of Form SD).