Guidelines of Good Manufacture Practice (GMP)for Veterinary Drugs Manufacturers Article 9

The representative sample shall be sampled batch by batch along with the notation upon the original containers for the stock of the raw materials and product containers or seals.The adequate label shall be attached to the container of the preceding sample to trace the name, batch number, sampling basis and original container of the sample and the name of the sampler.
中文原文 動物用藥品優良製造準則第9條
原料、產品容器或封蓋於進貨時,應逐批抽取具代表性之樣品,並於原裝容器上註明。
前項樣品之容器應予適當標示,俾能追溯樣品之名稱、批號、取樣之依據、原裝容器及取樣者姓名。

English translation for reference only; the Chinese text prevails. Not legal advice.