sentences:  Certina worked up a new business plan that expanded its operations..
  
  By 1972 Certina employed 900 people and produced 600,000 watches every year.1983 Certina became a member of the SMH Group (Swatch).In 1971, the owning family opted to join General Watch Co, the newly created sub-holding of ASUAG, in order to consolidate their efforts with others.