Need a letter of introduction from the company. The letter of introduction shall specify the telephone number of the person who applies for shutdown and disassembly, and the ID number and name of the person who goes to handle the shutdown and disassembly procedures. The handler can hold the original ID card, the above-mentioned letter of introduction and the original corporate certificate, and stay at the counter window of Netcom's business hall where the mobile phone is to be folded for a few minutes to go through the procedures of stopping and disassembling the machine.