1) While selecting material don’t just select as per look & feel. Keep your contractor, designer together to confirm quality for the material. Applies for hardware like hinges, ply, shutter etc
2) Original Modular Kitchen concept used MDF board. Indian kitchens never use MDF board. Always choose Marine ply or at-least Commercial.
3) Steel quality of Trolleys – unfortunately there is no test to verify if you are given good or poor quality for steel. Poor quality steel may catch rust after few years.