i too had bad experience with panggiap. a pity i didn't see this thread before using them!
they were willing to customise the grille design i wanted. and used thinner metal (which they say is okay)
The list of complaints are long:
1. when grille is completed, the workmanship is so horrible that it was shocking. lines that are supposed to be straight are not. The triangle shapes are of different sizes (when they are supposed to be the same). And the welding parts are badly done with bulges.
2. one of the grilles is not customised according to specifications.
3. the grille frames are scratched. The exposed metal will then easily rust. we need to get them to return to respray
They are willing to change, but kept getting us to their factory to do QC for them! It is ridiculous and a whole waste of time.
mr ang, the boss, becomes totally silent after there are problems. And their installers kept insisting that this quality is already very 'fine'.
The only positive experience ihad with panggiap was with kim yoong, one of the sales execs. she was patient and handled the matter well.
i will not use panggiap again.