Which logistics is the cheapest from Beichen District of Tianjin to Shenzhen?

Postal express. Postal Express is a state-owned enterprise, established in 1949, and is one of the earliest express service providers in China. The preferential price is the result of government support and supervision, and the average price of express delivery is 3- 10 yuan, so it is the cheapest to send express logistics to Shenzhen Post in Beichen District of Tianjin. China Post Express Logistics Co., Ltd. was established with the approval of the State Council. 20 10 June, China Post Group and provincial postal companies jointly initiated the establishment of a state-owned joint-stock company.