In the heat shrink industry to do so for many years, many of our customers that shrink shrink tube is the bottleneck of the production line, where Wal-Mart Electronics for everyone to sum up the heat shrink tubing, double wall tube shrinkage:

Small and medium volume contraction

     Alcohol lamp

     2. Industrial hot air gun

     3. Industrial hot air gun + compressed air

Medium or more bulk heat shrink

     4. boiled, steam heated

     5. Oven

     6. Oven + conveyor belt

     7. drying room

     8. contraction muscle (imported, domestic two)