Apart from the TV tower, are there any skyscrapers in Tianjin where the public can access an observation deck? I'm sure there are information online for whoever speaks Chinese, but that's not me...
This English language website about the Tianjin Global Financial Center says
an observation deck and sky restaurant at the top floors provide public access to a 360-degree view of the city.
Also the incomplete Goldin Finance 117 Tower is expected to have a public observation deck, when finished in 2020.