Plastic Bottle neck holder and handle(https://www.pet-preform.com/product/plastic-bottle-neck-holder-and-handle/)
1. good air tightness, moisture-proof and waterproof.
2. Light weight, easy to store and transport.
3. Transparency and high taste.
4. Low cost.
5. it is not fragile and deformation.
6.easy to carry.
7.Environmental protection