legal ground
Article 10 of the Provisional Regulations of People's Republic of China (PRC) on Value-added Tax.
The input tax of the following items shall not be deducted from the output tax:
(1) Goods, services, intangible assets and real estate purchased for simple taxation, exemption from value-added tax, collective welfare or personal consumption;
(two) abnormal losses of purchased goods and related labor and transportation services;
(3) Goods purchased (excluding fixed assets), services and transportation services consumed by products in process and finished products with abnormal losses;
(four) other projects stipulated by the State Council.