Contractors and inspectors always know what the material is and which company made it. Copper is accepted by virtually all plumbing codes. And it can withstand repeated freeze-thaw cycles, although, of course, no plumbing should be allowed to freeze. The company has supplied tubing in luxury homes for scores of actors, politicians, entertainers, manufacturers, architects, federal agencies and the military throughout California and other western states, including Alaska and Hawaii, and American Samoa. Copper is a noble metal that has never changed, and I have never had a failure.
Copper tubing is copper tubing is copper tubing.
Consider another company, which works throughout California. Sarasota, Florida's Ace Plumbing Inc. has tried a CPVC plastic over the last three years and has had to reject it. In a motel installation in our city, fittings failed on the cold side, where of course, there is no insulation. And they failed on the hot side, where we used three different insulation products. All three failed.