2. What does PW, HC, HCPW mean? What are these abbreviations?

PW = Pallet Wide, HC = High Cube, HCPW = High Cube Pallet Wide...are not official abbreviations. The ISO codes apply internationally. However, the abbreviations are common.

PW = Pallet Wide: + 6 cm extra wide compared to the standard container width: 2.44m vs. 2.50m

HC = High Cube: + 30 cm extra width compared to the standard container height: 2.59 vs. 2.89 m HCPW = High Cube Pallet Wide: the combination: + 6 cm extra width compared to the standard container width + 30 cm extra width compared to the standard container height.