A combination of: a) piezoelectric through-flow print heads having nozzles with an outer nozzle surface area NS smaller than 500 μm 2; and b) aqueous inkjet inks from an aqueous inkjet ink set for manufacturing decorative panels, wherein the aqueous inkjet ink set comprises: - a cyan aqueous inkjet ink containing a beta-copper phthalocyanine pigment; - a red aqueous inkjet ink containing a pigment selected from the group consisting of C.I. Pigment Red 57/1, C.I. Pigment Red 122, C.I. Pigment Red 170, C.I. Pigment Red 175, C.I. Pigment Red 176, C.I. Pigment Red 187, C.I. Pigment Red 188, C.I. Pigment Red 207, C.I. Pigment Red 242, C.I. Pigment Red 254, C.I. Pigment Red 272 and mixed crystals thereof; - a yellow aqueous inkjet ink containing a pigment selected from C.I. Pigment Yellow 83, C.I. Pigment Yellow 97, C.I. Pigment Yellow 110, C.I. Pigment Yellow 120, C.I. Pigment Yellow 138, C.I. Pigment Yellow 150, C.I. Pigment Yellow 154, C.I. Pigment Yellow 155, C.I. Pigment Yellow 175, C.I. Pigment Yellow 180, C.I. Pigment Yellow 181, C.I. Pigment Yellow 194, C.I. Pigment Yellow 213, C.I. Pigment Yellow 214 and mixed crystals thereof; and - a black aqueous inkjet ink containing a carbon black pigment; wherein the aqueous inkjet inks contain water in an amount of A wt% defined by Formula: 100 wt% − sqrt NS × 3.8 wt%/ μ m ≤ A wt% ≤ 1 00 wt% − sqrt NS × 2.2 wt%/ μm wherein the wt% is based on the total weight of the aqueous inkjet ink; wherein sqrt represents the square root of the outer nozzle surface area NS; and wherein A wt% > 40 wt%. a) piezoelectric through-flow print heads having nozzles with an outer nozzle surface area NS smaller than 500 μm 2; and b) aqueous inkjet inks from an aqueous inkjet ink set for manufacturing decorative panels, wherein the aqueous inkjet ink set comprises: - a cyan aqueous inkjet ink containing a beta-copper phthalocyanine pigment; - a red aqueous inkjet ink containing a pigment selected from the group consisting of C.I. Pigment Red 57/1, C.I. Pigment Red 122, C.I. Pigment Red 170, C.I. Pigment Red 175, C.I. Pigment Red 176, C.I. Pigment Red 187, C.I. Pigment Red 188, C.I. Pigment Red 207, C.I. Pigment Red 242, C.I. Pigment Red 254, C.I. Pigment Red 272 and mixed crystals thereof; - a yellow aqueous inkjet ink containing a pigment selected from C.I. Pigment Yellow 83, C.I. Pigment Yellow 97, C.I. Pigment Yellow 110, C.I. Pigment Yellow 120, C.I. Pigment Yellow 138, C.I. Pigment Yellow 150, C.I. Pigment Yellow 154, C.I. Pigment Yellow 155, C.I. Pigment Yellow 175, C.I. Pigment Yellow 180, C.I. Pigment Yellow 181, C.I. Pigment Yellow 194, C.I. Pigment Yellow 213, C.I. Pigment Yellow 214 and mixed crystals thereof; and - a black aqueous inkjet ink containing a carbon black pigment; wherein the aqueous inkjet inks contain water in an amount of A wt% defined by Formula: 100 wt% − sqrt NS × 3.8 wt%/ μ m ≤ A wt% ≤ 1 00 wt% − sqrt NS × 2.2 wt%/ μm wherein the wt% is based on the total weight of the aqueous inkjet ink; wherein sqrt represents the square root of the outer nozzle surface area NS; and wherein A wt% > 40 wt%. - a cyan aqueous inkjet ink containing a beta-copper phthalocyanine pigment; - a red aqueous inkjet ink containing a pigment selected from the group consisting of C.I. Pigment Red 57/1, C.I. Pigment Red 122, C.I. Pigment Red 170, C.I. Pigment Red 175, C.I. Pigment Red 176, C.I. Pigment Red 187, C.I. Pigment Red 188, C.I. Pigment Red 207, C.I. Pigment Red 242, C.I. Pigment Red 254, C.I. Pigment Red 272 and mixed crystals thereof; - a yellow aqueous inkjet ink containing a pigment selected from C.I. Pigment Yellow 83, C.I. Pigment Yellow 97, C.I. Pigment Yellow 110, C.I. Pigment Yellow 120, C.I. Pigment Yellow 138, C.I. Pigment Yellow 150, C.I. Pigment Yellow 154, C.I. Pigment Yellow 155, C.I. Pigment Yellow 175, C.I. Pigment Yellow 180, C.I. Pigment Yellow 181, C.I. Pigment Yellow 194, C.I. Pigment Yellow 213, C.I. Pigment Yellow 214 and mixed crystals thereof; and - a black aqueous inkjet ink containing a carbon black pigment; wherein the aqueous inkjet inks contain water in an amount of A wt% defined by Formula: 100 wt% − sqrt NS × 3.8 wt%/ μ m ≤ A wt% ≤ 1 00 wt% − sqrt NS × 2.2 wt%/ μm wherein the wt% is based on the total weight of the aqueous inkjet ink; wherein sqrt represents the square root of the outer nozzle surface area NS; and wherein A wt% > 40 wt%.