Split grain leather,Premium leather,Ostrich leather 分别是什么皮 ,

请问 Split grain leather Split grain leather,Premium leather,Ostrich leather 分别是什么皮 , TOP GRAIN LEATHER什么意思 full grain upper leather是什么意思 Cow Full Grain lining leather这是一句关于皮革的英语, 请问Full Grain Leather中文名称是什麼?Patterned Leather 中文名称又是什麼?而这两种皮革有何不同呢? GRAIN split split split 请问下头层牛皮和全粒面皮革（full grain leather）有什么区别呢? 英语翻译We are looking forward cow skin wet blue split leather.Our 1)Cow skin wet blue split leather,(2rd split leather)area:8 sqft and up,thickness:1.2mm up,without warbles,scars,veins,2)Cow skin wet blue 3rd split leather:Area:14 sqft and up,th Leather Leather LEATHER . leather 求一句英译汉,A reversed suede is a grained leather that has been designed into the leather article with the grain facing away from the visible surface.It is not a true form of suede. 英语翻译Goods name:Cow split leather wet blue.with shoulder.Size:10-16 sq.ft.100% sides.Thickness:1.2-1.6mm Grade:TR Price:US$0.29/sq.ft.CFR China by sea.Goods name:Cow split leather wet blue.with shoulder.Size:14-26 sq.ft.100% full hides.Thickne