I want to use non-plastic, compression fittings with under sink water filter

Do you make a residential or commercial drinking water filtration system which has compression fittings or threaded screw connections. I do not want to use plastic tubes and push type connections. I want to use copper tubing.

 We offer a stainless steel water filter system as an inline filter, 3/4" female NPT connections, 1.3 gallons per minute. You may connect to it by using copper tubing and compression fittings. It does not include faucet or installation kit. Please see IFS10-UC