1. For water(cold & hot)/gas pipe system, Composed of 5 layers: 
-External Plastic/external Glue/Aluminum/internal Glue/internal Plastic 

Applications: 
-Cool & Hot Water Pipe System 
-Housing Gas Pipe System 
-Under floor heating System 
-Solar Energy & Air-conditioning Matching Pipe System 
-Medical, Foodstuff & Chemical Industry Pipe System 

 Characters & Advantages: 
-Wide range working temperature(**0C~*5C), Hi-pressure resistance 
**0% more flow than metal pipe 
**0 year working life 
-Non-corrosive, scale-free 
-Hygiene, no oxygen permeability, no growth of Microorganism 
-Non-inflammable, non-static 
-Easy bending but never spring back 
-Light in weight, easy to carry and store 
-Few pipe fitting applying leading to little leakage