This is Candy Chen. My company offer a new material composite conveyor rollers.

Design Features:
Composite bearing housing
Composite pipe shell (Thickness: 15-30mm)
DTII seal ( Double labyrinth seal )
Sold steel shaft

1.Up to 8X - 10X longer wear life than steel rollers. See example below.
Size Price(USD) Working Life Replace Rate 100pcs Cost Save cost
Composite roller 127*376mm $28.75 8-10 Year ≤5% $2875 ≥$8000
Steel Roller 127*376mm $14.95 1-2 Year ≥90% $1495 0

Click image for larger version. 

Name:	QQ图片20161104134239.png 
Views:	102 
Size:	6.6 KB 
ID:	45312
2. Super long wear life than steel, stainless steel and HDPE.
3. Anti-Corrosive properties ensure environments cannot rust or corrode the roller.
4. Self cleaning surface reduces build-up of carry back and improves tracking of the belt.
5. T.I.R≤0.1mm, Up to 10db lower operation noise than steel rollers.
6. Reduce OH&S risk due to reduced weight.
7. High Anti-magnetic properties
Click image for larger version. 

Name:	复合.jpg 
Views:	151 
Size:	352.8 KB 
ID:	45313