Does the custodian of the evidence list have to be a policeman?
yes. The list of evidence obtained shall be signed by the people's police handling the case and the holders or witnesses of the sampled items. If the holder of the sampled goods refuses to sign, the people's police handling the case shall indicate it on the list of evidence obtained by sampling. The list of evidence shall be held by the people's police handling the case and the holder of the sampled goods.