What is the certificate of duty exemption for import and export goods?

Article 42 of the Regulations on Import and Export Tariffs of the People's Republic of China*** and the State of China stipulates that nine categories of temporarily imported and exported goods are exempted from tariffs (see below for the specific provisions). Temporary inbound and outbound goods outside the nine categories are subject to 1/60th of the tariff on a monthly basis in accordance with Articles 42 through 46 of the Regulations of the People's Republic of China on the Administration of Taxation of Import and Export Goods. \x0d\\\\\x0d\\ Chinese People's*** and State Import and Export Tariff Regulations \x0d\\\x0d\ Article 42 \x0d\\x0d\ The following goods, which have been approved by the Customs for temporary entry into the country or temporary exit from the country, and at the time of entry into the country or exit from the country, the taxpayers who pay the deposit equal to the amount of tax due to the Customs or provide other guarantees, may not pay the customs duty temporarily, and shall be resumed within 6 months from the date of entry into the country or exit from the country Within six months from the date of entry or exit, the goods shall be reshipped out of the country or reshipped into the country; upon the application of the taxpayer, the Customs may extend the period of reshipping out of the country or reshipping into the country in accordance with the regulations of the General Administration of Customs: \x0d\\\x0d\(a) Goods to be displayed or used in exhibitions, trade fairs, conferences, and similar activities; \x0d\\\x0d\(b) Performances and competition goods to be used in cultural and sports exchange activities; \x0d\\\\\x0d\\(iii) Instruments, equipment and supplies used for news reporting or filming movies and TV programs; \x0d\\\x0d\(iv) Instruments, equipment and supplies used for scientific research, teaching and medical activities; \x0d\\\x0d\(v) Transportation vehicles and special vehicles used in the activities listed in subparagraphs (i) to (iv) of this paragraph; \x0d\\\\\\ \x0d\\(vi) samples of goods; \x0d\\\x0d\(vii) instruments and tools for use in the installation, commissioning and testing of equipment; \x0d\\\x0d\(viii) containers for goods; \x0d\\\x0d\(ix) other goods used for non-commercial purposes. \x0d\\\\x0d\\ The Customs shall, in accordance with the law, collect customs duties on goods listed in the first paragraph which are temporarily permitted to enter the country but are not reshipped out of the country within the prescribed period, or goods which are temporarily permitted to leave the country but are not reshipped into the country within the prescribed period. \x0d\\\x0d\\ Other temporarily permitted entry goods other than those listed in the first paragraph which can be temporarily exempted from customs duties shall be subject to import duties calculated in accordance with the proportion of the duty-paid price of the goods and the period of time that they remain in the territory to the period of time that they are depreciated. Specific measures shall be prescribed by the General Administration of Customs.