For Port speed pass, dedicated line, TOLL, SF, IE, Citylink:
Volume weigh =length ( cm ) * width( cm) *height(cm)/6000
For DHL:
Volume = length ( cm ) * width( cm) *height(cm)/5000
You can inquire about weight in DHL at website: http://www.cn.dhl.com/apps/queryWeight/index.jsp
European special line
Volume = length ( cm ) * width( cm) *height(cm)/6000
For Preferential line, EMS, SAL:
Generally they not need volume.For large goods ,we can calculate it volume according to actual situation.
Warm reminder: When the volume of the package is greater than the actual weight, we will charge according to the volume .If your package is charges according to the volume, marks on the parcel waybill by logistics company is based on weight .Actually ,we calculate freight using volume .I am sorry it is inconvenient for you.