In terms of strength and hardness, ordinary backing boards have relatively low strength and hardness. Plywood is prone to delamination and cracking when subjected to significant external impact; fiberboard also has limited hardness and may deform under heavy pressure. Multifunctional backing boards, due to their special materials and processes, typically have much higher strength and hardness than ordinary backing boards. They can withstand greater pressure and impact, are less prone to damage, and have a longer service life.
Regarding dimensional stability, ordinary backing boards are significantly affected by environmental factors. When ambient humidity and temperature change, plywood and fiberboard are prone to expansion and contraction, leading to dimensional instability. This can affect installation accuracy and overall aesthetics. Multifunctional backing boards undergo special treatment, resulting in better dimensional stability. They maintain relatively stable dimensions under different environmental conditions, ensuring installation effectiveness and performance.