We decided on Tai Shan to replace our roofing after they did several neighbouring roofs and it was clear that they had done a good job and knew their business. Their price was superior to other quotes we received. Their quality and workmanship was good. They worked quickly and efficiently - completing our job in around 7 hours (with a team of five workers). They did a good job with cleanup - leaving little trace behind that they'd been there.
Our only complaint is that, in their haste, they dented a highly visible section of eavetrough and left some noticable scratches on the top of a recently installed air conditioning unit beside our house. We were not pleased with this minor, but annoying, collateral damage.