Legal basis: Article 43 of the Law of the People's Republic of China on Animal Epidemic Prevention. Animals slaughtered, marketed, transported and participating in exhibitions, performances and competitions shall be accompanied by quarantine certificates. Animal products sold and transported shall be accompanied by quarantine certificates and quarantine marks. For the animals and animal products specified in the preceding paragraph, the supervising agencies for animal health may inspect the quarantine certificates and quarantine marks, and conduct supervision and spot checks, but shall not repeat the quarantine fees.