This part of GB/T 18874 specifies the relevant information that should be provided by the following parties of tower cranes: Consultant (the buyer who consults the tower crane); Orderer (the buyer who orders the tower crane); The seller; Manufacturer/ Supplier.
GB/T 18874.3-2009 Referenced Document
GB/T 17908-1999 Cranes and lifting appliances--Technical characteristics and acceptance documents