These tank for Indian border. Few main factor before buy these tanks are , intense hot weather, fields and marshes, visibility poor in Punjab region in winter, lots of green fields. Second region , is dusty plains, where tank visibility is very high. Third and most intense is desert region, where tanks frequently break down,due to heat. Where Indian Arjun failed to perform, even with German engine. Pakistan army usually do lots of modification in tank, specially cooling system.Because these East European wheelers cooling system are not effective in our region. Can give one example, when few APC supplied from some eastern European company in Iraq ,where they frequently break down, after few months Iraqi govt paid extra amount to modified the cooling system, otherwise they were all piece of junk without heat and sand particles protection.