The standard bottle embryo is transparent, and when the bottle top is heated to a certain temperature the chemistry configuration in the bottle top changes. This changing is normally called crystallization. After crystallization, the bottle top becomes white, and then the characteristic of material will also become different. The high temperature durability and hardness of bottle top can be largely enhanced, and this kind of bottle embryo is suitable for a drink filling under a high temperature, for example, tea (black tea and green tea).