Rapid product development links

• RPD equipment/material manufacturers around the world
  is a table of RP equipment menufacturer sites arranged according to their working principle.
  
  
• Free/Demo STL file viewers available on Internet
  contains a list of common STL viewers available for download.
  
  
• Reference materials on RP&M
  - a list of books and journal papers related to RPD technologies. Materials that are available in the PolyU library are hyper-linked.
  
  
• Service providers in China and HK
  
  
• Global Alliance of Rapid Prototyping Associations (GARPA)
  
  
• The Worldwide Guide to Rapid Prototyping
  - A directory of RPD sites, Institutes and service bureaus around the world. The RP PATENTS section has a very handy list of patents filed in the last few months.