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1. Excellent thermal properties
2. Easy to install and long lifespan
3. High strength and less resistance
4. Light weight, convenient to transport and handle
5. Low cost and recyclable; thereby benefiting the environment
6. Healthy and non-toxic, bacterial neutral, conforming to drinking water standard
7. Colors,white, green , grey, other customized colors available
8.size:20×1/2'' 20×3/4'' 25×1/2'' 25×3/4'' 32×3/4'' 32×1'' 40×5/4'' 50×3/2'' 63×2''
ppr male coupling