Barka Wareegga suufka ah ee loo yaqaan 'Phenolic Cotton Round Bar' waa shay la dahaadhay oo ka samaysan maro suuf ah ama maro fiber galaas ah oo ah maro aasaasi ah, oo lagu shubay resin phenolic ah oo la riixay oo la daaweeyay. Waxay leedahay sifooyin farsamo oo aad u fiican iyo iska caabbinta kulaylka waxaana si ballaaran loo isticmaalaa beerta warshadaha.