The Uniform Invoice or Unified Invoice (traditional Chinese: 統一發票; simplified Chinese: 统一发票; pinyin: Tǒngyī fāpiào), is a type of receipt in Taiwan that is issued by merchants for selling products and services, kept by both seller and consumer, with a 8-digit number for each one, for taxation proposes, managed by the Ministry of Finance of the Republic of China (Taiwan) existing in many form such as hand-written 2-copy, 3-copy, and printed with cashier, and recently electronic Uniform Invoice. U...