When inspecting goods at the customs, sometimes it may involve inspecting the goods with labels. Generally speaking, it is not illegal for customs to inspect goods with labels. Customs has the right to inspect imported and exported goods to ensure compliance with national laws and regulations and to ensure the legality and safety of the goods. Customs usually operates in accordance with relevant laws, regulations, regulations and procedures to confirm whether the goods comply with relevant regulations. This may include checking the goods and logos, logos, trademarks, etc. on the goods.

However, if the customs inspection violates laws and regulations, infringes upon personal privacy rights or business secrets, etc., then the behavior may be considered illegal. The specific situation may vary from country to country, so I suggest that on specific issues, you can further consult the relevant local legal agencies to obtain more specific legal advice.

In short, it is legal for customs to inspect goods. This is a measure taken by the state to protect national security and comply with relevant laws and regulations.