Please refer to the website for exchange rate of declaration. The period of inquiry depends on the arrival date of parcels. 

Contact point
Customs service sites in the post office
1.Kaohsiung Mail Processing Center Post Office(Kaohsiung Branch 92)
  Address: 7F, No. 853, Minzu 1st Rd., Zuoying Dist., Kaohsiung 81301,Taiwan (R.O.C.)
  Tel: 07- 3479316
2.Tainan Chenggong Road Post Office(Tainan Branch 901)
  Address: 5F, No. 8, Chenggong Rd., North Dist., Tainan 704401, Taiwan (R.O.C.) 
  Tel: 06-2222077