For PE goods, annex B2 of Istanbul Convention, if technician is not present at the time of entry, the owner or the authorized representative of the company requires to provide to customs a mandate (equivalent to a POA) with details of:
the full company name and passport of the owner (for both the Holder and the agent in Chile)
name of the customs agent, freight forwarders, logistics company, company RUT, address, name and identity card of the company employee-in-charge
indicate that the Carnet goods will not be loaned, rented or used by third party who receives compensations
the tentative date of arrival