Is it normal for the company's warehouse delivery to be concealed?

Normal. In order to protect the safety and confidentiality of commodities, it is normal to take strict security measures for some commodities involving secrets or trade secrets to ensure that they are not exposed to the risk of disclosure. Concealment refers to taking some measures to package the goods more concealed, so as to achieve the purpose of confidentiality and safety. These measures may include adjusting the form, size and weight of packaging, setting sealing labels and anti-counterfeiting marks, etc.