unity : How to control the tile value of a material when extract material from imported game object (fbx, blend etc)


I import .blend (or .fbx) file into unity and i extract the materials. Sometimes the rusult of the material tiling is 5×5 , sometime 1×1. What makes unity decide what tiling value to be used when extracting material ? Can we control it ? i’m confused because normally it’s 1×1 but at some case the material has tiling of 5×5.