(1) handle ::
trin(2) handling charge ::
trin ac am ddim(3) handling charges ::
trin taliadau(4) shipping and handling ::
llongau a thrin(5) air handling unit ::
uned trin aer(6) exception handling ::
trin eithriad(7) error handling ::
trin gwall(8) data handling ::
trin data(9) materials handling ::
trin deunyddiau(10) cargo handling ::
trin cargo(11) complaint handling ::
ymdrin â chwynion