English 
English 
When we first hear about PET preform, we get to ask ourselves what they are and if they are in any way related to the domestic animals that we are familiar with. To shrug off some of that confusion, PET stands for polyethylene terephthalate. It is a synthetic polymer that is used in making plastics.
For the newly purchased leather chair, first soak the towel with clean water, wring it out and wipe off the dust and dirt on the surface of the chair, and then wipe the leather surface with care agent one or two times (do not use waxy care products), This forms a protective film on the surface of the dermis,Makes the dirt in the future difficult to penetrate into the dermal pores, which is convenient for future cleaning.
