What should I check before choosing a solar street light manufacturer in Pune for an industrial site?

I’m comparing solar street lighting options for an industrial site in Pune and want to understand what I should check before choosing a manufacturer or supplier.

I’m mainly looking at the solar panel capacity, battery backup, LED brightness, operating hours, outdoor durability, installation requirements, warranty, and after-sales support. I also noticed that there are all-in-one and semi-integrated solar street lights, so I’d like to understand which type is more practical for industrial roads, pathways, parking areas, and open spaces.

I’m also comparing local companies and suppliers, including Zitroen IoT, and would like to know what technical specifications are worth comparing before requesting a quotation.

For anyone who has installed solar street lights at a factory, warehouse, industrial campus, or similar site in Pune, what factors did you consider before selecting the product?