Abstract: In a case where an FSSS average particle size of a tungsten-containing powder as obtained by an FSSS method is defined as a (?m) and a density TD, which is an inverse number of a tap volume of the tungsten-containing powder, is defined as p (g/cm3), a relational expression of p?0.37a+7.04 is satisfied when a range of the FSSS average particle size a is 0.5 ?m?a?5.0 ?m.

Abstract: To provide a corrugated board packaging assembly, in which its assembly and disassembly is easy, there is no bulky storage, and handling of a set during storage and transfer is possible, and which is suitable for repeated use. In a corrugated board packaging assembly 1 having a corrugated board box body 2b and a corrugated board pallet 12, the corrugated board box body 2 comprises a lid 3 and a foldable shell frame 4, the corrugated board pallet 12 has a side flaps for fitting the shell frame 4 into the corrugated board pallet 12, on the top of the corrugated board pallet 12, the shell frame 4 is folded to be accommodated inside the side flaps 17 before assembly of the corrugated board packaging assembly 1, and a lower outside surface of the shell frame 4 is removably fitted into the inside surfaces of the side flaps 17 to be assembled during the assembly of the corrugated board packaging assembly 1.

Abstract: To provide a corrugated board packaging assembly, in which its assembly and disassembly is easy, there is no bulky storage, and handling of a set during storage and transfer is possible, and which is suitable for repeated use. In a corrugated board packaging assembly 1 having a corrugated board box body 2b and a corrugated board pallet 12, the corrugated board box body 2 comprises a lid 3 and a foldable shell frame 4, the corrugated board pallet 12 has a side flaps for fitting the shell frame 4 into the corrugated board pallet 12, on the top of the corrugated board pallet 12, the shell frame 4 is folded to be accommodated inside the side flaps 17 before assembly of the corrugated board packaging assembly 1, and a lower outside surface of the shell frame 4 is removably fitted into the inside surfaces of the side flaps 17 to be assembled during the assembly of the corrugated board packaging assembly 1.