At present, Harbin express companies include: Shentong, Tong Yuan, SF, Tian Tian, Dayun, Zhongtong, Huitong and China Post ems. The ems prices of SF Express and China Post are higher than those of other express delivery services (mailing an mp4, because of its light weight, does not exceed a few yuan), but the speed is also the fastest, especially SF Express, which is not only fast, but also has good service. I used it in Harbin.
Send an mp4 from Harbin, Heilongjiang to Yuxi, Yunnan. The postage is around 20 yuan by SF Express (you can pack it yourself, which can save the packaging fee). The time is about 2-3 days. When mailing, you can track the status of the mail (through the website of the courier company). You can call a courier to your door with a phone call. The national telephone number of SF is 4008 1 165438.