1. The jar lid is made of aluminum, which is corrosion-resistant, not easy to rust, and can be reused many times. 2. It has a threaded structure that can match the mouth of the jar and provide sealing.
1. The jar lid is made of aluminum, which is corrosion-resistant, not easy to rust, and can be reused many times. 2. It has a threaded structure that can match the mouth of the jar and provide sealing.