Hi Guys, not sure if this is the right place to ask.
This type of roof liner material, what it is called? Is it Fabric type? (Maybe got the wrong keyword so didn't much search results)



To me this type is very delicate and need to handle with extra care can't just wipe to clean it.
Any approach to clean the spot on the left side?

Maybe can't really tell from the picture. I just did the top tinting strip (shade band) on the front windscreen, that 'stain' is not there earlier so it must be the water/chemical thingy that they spray kena the roof.
When I run my finger on it it feel rough and 'hardened', like kena super glue

I'm kind of an OCD person so it bothers me

Thanks

Thank Guys Steam cleaning macam very magical haha, wonder if any cheaper one on Lazada, can use to clean sum other stuff also