Debon logistics batch charging standard?

As shown in the figure, Debon official website's inquiry shows that the charging standard and estimated freight rate of 6 kg express delivery from Chongqing to Dalian are as follows:

From 39 yuan (Bulk Express 3.60)

From 63 yuan (Speedpost)

PS: Commodity prices may fluctuate due to different factors such as material, nature and region. All quotations are subject to those quoted by the local sales department.

More than 3 kilograms is also a big express.