Complex sentence: There is no ISO standard for quartz timepieces, but COSC has also developed its own standard for testing quartz chronometers with eight eliminatory criteria, also noted in the table below.
Split into simpler sentences: There is no ISO standard for quartz timepieces, but there is develpment in this field. Nevertheless, COSC has also developed its own standard for testing quartz chronometers with eight eliminatory criteria, also noted in the table below.