The so-called first layer cowhide refers to the raw skin of a cow being horizontally cut into several layers by a skinning machine, and the top layer connected to the cow skin is the first layer cowhide. The texture, pores, and naturalness we pursue are all aimed at the first layer cowhide. And the rest, all of which are considered as fiber tissue of the leather, are coated and covered with film, and then called two-layer cowhide or even three-layer cowhide according to the number of layers.

In the home building materials industry, there are many practitioners who talk about "consumption upgrading", but few people talk about "consumption downgrading". To exaggerate, as a representative of this term, the listing of Pinduoduo seems to have given many industry practitioners a new hope. However, is it worth emulating the consumption concept and business model guided by consumption downgrade for home building materials practitioners? This issue is worth paying attention to.