Unit: 17th Heavy Armor Combined-Arms Brigade, LX12, 76th Group Army (LX = Land, West)
Impressive PR aside, noted that GCZ110 Combat Engineer Vehicle cleaning mine before the race. GCZ110's back "square" likely to host mine clearing line charges as well.
Source (
here)
PLA orbat update: 17th Heavy Armor Combined-Arms Brigade, 76th Group Army, Western Theater Command
The 17th Heavy Armor Combined-Arms Brigade, formally the 13th Group Army
Armor Brigade, Chengdu MR is in the process of receiving ZBD04A and
ZTZ99, bringing it up to PLA's current heavy "standards". This unit was
sporting Type 59 MBT and Type86 BMP-1 clone as late as 2016.
Again, full credit goes to Andrew KC for this update.
News from 2016