brikk, Agreed. Also, they can subcontract out when necessary:
"We manufacture and fabricate our products at facilities located in Channelview, Texas and maintain valuable relationships with several other companies that own additional manufacturing and fabrication facilities in and around Houston, Texas. These other companies provide excellent subcontract manufacturing support on an as needed basis. Our manufacturing operations are vertically integrated. We perform substantially all of our own heat-treating, machining, fabrication, inspection, assembly and testing at our facilities."