I am not quite sure how to tag this. 
As far as I have found, Vodoinstal is the company name. They have shop (store) on this address and are a contractor as well. 
shop=trade doesn't define the established meaning here - they sell supplies for water, gas, heating and electrical installations in a house and/or install these as a contractor. It is quite common combination, sometimes reduced to water + heating only, sometimes extended to include complete HVAC (air conditioning/ventilation as well).

There is similar problem on the opposite side - the hardware shop is not quite an hardware shop, but more an "extended" convenience store - explicitly stated convenience+hardware+flowers.