PPE1 + Purchase2 - Depreciation2 = PPE2
PPE2 > PP1, purchase2 confirmed.

Based on your data, the Dep2 = 5,487
Net PPE1 + Pur2 - Dep2 = Net PPE2
15,452 + 6,632 - 5,487 = 16,597          Inaddition,
                                     Dep1 = 6,435


D2 = A/D2 - A/D1      = 11,922 - 6,435
      = 5,487

D1 = A/D1
      = 6,435


I hope this help. :)

跟中国的差别好大！！