With concerts of three, four, five, six or eight and more bells, perfect harmony is required, together with a homogeneous timbre for all the components; this becomes even more important the higher the number of bells. A wide range of musical chords can be achieved and for each project De Poli studies the specific characteristics of the concert, which must meet special local needs and taste. There are several ringing methods, with bells that oscillate more or less rapidly, using specific technical expedients during installation. Here at De Poli, because we have provided bells all over Italy and throughout the world, we are able to make all ringing systems and can provide consultancy to solve a host of different issues. According to the size of the belfry we are able to manufacture not only bell concerts, but also iron towers and all accessories, which are extremely easy to install thanks to the experience we have gained and perfected over the years.