What is the ruling of agha seestani for the leather products made in China, India, Italy, Portugal, Brazil and these products purchased from UAE. Can we give probability of tazkia and considered it as tahir and use those products or those products are najis.

If you’re sure they are from the countries mentioned, it’s likely to be Najis, since his ruling is whether there is a chance they are made from dhabeeha which is halal. It is unlikely that this is the case in those countries, since they’re not majority Muslim countries, unless you have information that dhabeeha was used