What makes a good solar street light company in Pune?

There are many companies offering solar lighting products in Pune, so I am trying to understand what actually separates a reliable solar lighting company from a company that mainly sells standard products.
For someone looking for a solar street light company in Pune, what should be checked before making a purchase?
I would consider factors such as:
Product range and available configurations
Quality of solar panels and batteries
LED performance
Product durability for outdoor use
Warranty terms
Installation assistance
Availability of replacement components
Technical support after installation
Experience with different types of projects
I am also interested in whether manufacturers normally provide customized recommendations based on the installation location or simply recommend products based on wattage.
For example, a residential society, industrial road and village road may not have exactly the same lighting requirements.
Would appreciate practical suggestions from anyone who has worked with solar street lighting projects in Pune.