Regulations for Food Labeling Article 11
The content of rice variety labeled in the packaging or container shall reach more than eighty percent.
中文原文 糧食標示辦法第11條
包裝或容器標示稻米品種者，其內容物含標示之品種含量，應達百分之八十以上。
English translation for reference only; the Chinese text prevails. Not legal advice.