1, due to quality problems, caused by raw materials, semi-finished products and finished products can not be used in the production or sale of scrap;
2, due to product quality problems, the occurrence of after-sale recall, resulting in the scrapping of materials;
3, product renewal, part of the specialized materials have lost the use of value, the formation of the scrap.
Legal basis: "Provisional Regulations on Value-added Tax" Article 10 The input tax of the following items shall not be deducted from the output tax:
(1) Purchased goods, services, services, intangible assets and real estate used for the taxable items of the simplified taxing method, the exempted value-added tax item, the collective welfare or the personal consumption;
(2) Purchased goods of unnatural loss, as well as the related labor services and transportation services;
(c) purchased goods (excluding fixed assets), labor services and transportation services consumed in products in process and finished products with abnormal losses;
(d) other items prescribed by the State Council.