There is only one TWC, Inc. don’t be fooled. Check for the TWC logo. There are several Portland window cleaning businesses using the TWC name in their web sites. I put a snapshot of my 1st truck in here just for enjoyment. Check out the date. Not too much time after this she was retired. I actually do miss my 1969 Chevrolet with a 396 cubic inch motor. I wish I had more photos of my old truck. Free estimates at 503-309-9937