Elcom, Inc.
                                        
  215.885.1715
  P.O. Box 4  
Glenside,  PA 19038
                                                           
Hughes Safety Products
                             
  800.343.0109
  P.O. Box 957  
Blue Bell,  PA 19422
                                                        
Jerry Joseph Associates
                            
  215.576.5831
  1272 Grovania Ave.  
Abington,  PA 19001
                                                   
Koebert Associates
                                 
  215.887.2317
  2858 Mt Carmel Avenue  
Glenside,  PA 19038
                                                
Stover Associates,Inc
                              
  215.885.5725
  312 Woods Road  
Glenside,  PA 19038