Which logistics is the cheapest from Nanjing to Zhengzhou?

China Railway Logistics is quite cheap. The charging standard is 8 yuan No.1 weight 17 yuan and No.2 weight 17 yuan per kilogram. For the "economical express delivery" from Nanjing to Zhengzhou, the charge standard is 10 yuan for the first weight within one kilogram, and 5 yuan for the second weight per kilogram. In this way, from Nanjing to Zhengzhou, if it is a kilogram of express delivery, "Economical Reach" is cheaper than "Next Day Reach" by 7 yuan money, and if it is a kilogram of express delivery, "Economical Reach" is cheaper than "Next Day Reach" 10 yuan.

2. It is cheaper for logistics companies to pick up goods by phone. Logistics can be divided into heavy goods and light goods, with heavy goods calculated by kilograms and light goods calculated by volume. The part in the province is generally less than one kilogram 10 yuan, and 2-5 yuan is added per kilogram. The general starting price of spare parts in the province is (within 1kg) 12- 15 yuan, and 5-8 yuan will be added for each part exceeding 1k g. If it is fragile or valuable, you have to add insurance premium. The mode of transportation is precision truck air transport, with heavy cargo of 2.40 yuan/kg and light cargo of 504 yuan/m3, starting from 40 yuan and starting from 60 yuan. The mode of transportation is precision automobile transportation, with heavy goods of 2. 10 yuan/kg and light goods of 44 1 yuan/m3, starting from 30 yuan and starting from 50 yuan.