I have had a few experiences sending back to China for repair.
When I first got into this hobby many many years ago, I had a watch dead on arrival. I contacted what I now know to be a NON trusted dealer and after many weeks of back and forth, they agreed to repair it. They asked me to send it back and provided an english only address. They told me not to use Fed Ex or DHL, but I thought I knew better, and used DHL anyway (cheaper than FedEx as I was inpatient and wanted to get it back as quickly as possible. I found out why they say NOT to use FedEx or DHL, as the Chinese Customs inspect these packages carefully. My $400 rep was confiscated by Chinese customs never to be seen again. I was out the cost of the watch and the $50 DHL fee. Sending by FedEx, UPS Express or DHL is extremely risky.
I had another situation, where I decided to send the watch back to China for repair by Registered Mail. Cost about $18 from USA to CHina. Watch was delivered 11 days later, and was signed for by the recipient. Watch was returned to me 6 weeks later safely....but the damn thing still didnt work lol. But, it was the safest way to get something back to CHina, and because I sent it registered mail, there was proof of delivery.
Last situation happened about a year ago. I had a watch delivered with a broken crown, and the hands fell off in transit. I didnt want to deal with it locally, so I contacted Dealer, and was told to send back by regular mail (they specifically told me not to use FedEx DHL, UPS). Because I successfully had sent a package to China by Registered Mail, I decided to use USPS Priority Mail service. I thought that would be as safe as Registered Mail. Again, I was wrong, as CHinese customs confiscated the watch.
My experience is being shared to hopefully help anyone who has any thought of not following the precise instructions of the TD. Send by regular mail, and if possible, spend the few extra bucks for registered service so there is proof of delivery. Dont attempt to use express service, or priority service as you are taking a large risk. Be patient. Only use a TD. Send signature required. If I ever receive a watch that is DOA, I will NEVER send it back to China again. I lost 2 of 3 watches. I admit that both times I didnt listen to the precise instructions of the dealer.But I would rather send the watch off to Katt or Vac and have it fixed, rather than risk Chinese customs ever again.
FOr the new members who may be reading this, many experienced members are suggesting to only send it back as a last option....there really is risk of never seeing your watch again.