Armor of tank is actually a matter of discussion.
The presentation was made a long time ago, but here is a later information in the photo.
I nevertheless translated this with my dear friend's help:
"Protection against penetration and breaking(armor crack i think) exceeds 1000 mm.
Recently, in the program on channel CCTV-13, the domestic main tank 99A, for the first time publicly demonstrated the protective properties of the tank 99A. Its protection makes it possible to resist sub-caliber projectiles with a detachable pallet with tail stabilization (APFSDS maybe, i dunno, because i am russian-speaking guy and most terms in russian and english different) capable of piercing 1000 mm armor. This is the first domestic main tank, whose protective capabilities surpassed the figure of 1 meter. According to information from some sources, it is able to withstand the hit of almost all sub-caliber projectiles with tail stabilization. This proves that the protection of Chinese main tanks has now reached a very high level."
So, i think on presentation they ignored ERA or they saying about different armor zones.
The presentation was made a long time ago, but here is a later information in the photo.
I nevertheless translated this with my dear friend's help:
"Protection against penetration and breaking(armor crack i think) exceeds 1000 mm.
Recently, in the program on channel CCTV-13, the domestic main tank 99A, for the first time publicly demonstrated the protective properties of the tank 99A. Its protection makes it possible to resist sub-caliber projectiles with a detachable pallet with tail stabilization (APFSDS maybe, i dunno, because i am russian-speaking guy and most terms in russian and english different) capable of piercing 1000 mm armor. This is the first domestic main tank, whose protective capabilities surpassed the figure of 1 meter. According to information from some sources, it is able to withstand the hit of almost all sub-caliber projectiles with tail stabilization. This proves that the protection of Chinese main tanks has now reached a very high level."
So, i think on presentation they ignored ERA or they saying about different armor zones.