Can you talk about the advantages and disadvantages of SF, China Post, Debon, Dayun and Shentong?

Bon voyage? Advantages: timeliness, safety and standardized management. Disadvantages: expensive, not available in some remote areas.

China Post? Advantages: wide coverage, safety and security, and standardized management. Disadvantages: poor service, expensive price and unstable time limit.

Debon, advantages: heavy goods and large pieces are more professional, and straight management is more standardized. Disadvantages: the price is generally too much surcharge, and some remote areas cannot be delivered.

Big cloud, advantages: low price, high network coverage, disadvantages: the management of joining mode is chaotic and time-limited, and security cannot be guaranteed.

Shentong? Advantages: low price and high network coverage. Disadvantages: the management of joining mode is chaotic, there is a time limit, and the security cannot be guaranteed.