According to the provisions (the Department of Taxes [1991] 1375), the right to enjoy preferential customs duty relief for imported goods, the supervision by the length of customs regulations, regulatory relief for tax years from the date of the release of imported goods, the date of the tax relief goods, supervision of lives are as follows :
(A) ships, aircraft and building materials (including: steel, wood, plywood, plywood, glass, etc.) for 8 years;
(B) motor vehicles and household appliances for 6 years;
(C) machinery and equipment and other equipment and materials for 5 years.