... , computers, calculators, telephones, electronic and toys . One.Piezo Ceramic Element Applications1. For sound making:Clocks,Calculators,Telephones,Washing machines ... center of the diaphragm may cause cracking in the ceramic elements .When the diaphragm is supported by the edge ... . Nowadays , it has over 500 employees , 6000m2 of manufacturing plant , and 200 sets of production and test facilities and ...