How should I choose a whole-house customization manufacturer in Beijing?

When choosing a whole-house customization manufacturer in Beijing, it is advisable to clarify four things first: first, whether the board environmental grade can be selected among HENF, ENF, and E0—do not just listen to the words “eco-friendly board”; second, whether the edge banding is PUR edge banding or laser edge banding, and whether you can visit the factory to see the cutting and edge banding processes; third, which brands of hardware are used—Blum, Hettich, and DTC should be written into the order; fourth, whether the quotation includes removal of existing cabinets—removal of existing cabinets generally needs to be explained in advance and confirmed separately. After asking these four points, it is more reliable to compare price and design.