I always used Mitrapel products. I once bought a similar product and it damaged the facade of the building due to its low quality. I suggest everyone to use the original Mitreapel, maybe it is a bit more expensive than low-quality products, but in terms of quality, I feel comfortable working.
Baqir / Korosh Stone Factory Qom
We only use mitrapol silicone for sealing our chandeliers and only mitrapol instant glue for our connections