Complex sentence: ETR currently has more than 15 customers in Windsor-and serves several customers in the town of Amhertburg including Honeywell and Diageo Distilleries.
Split into simpler sentences: ETR currently has more than 15 customers in the Windsor-Amherstburg area. The ETR serves Several customers in the town of Amhertburg including Honeywell and Diageo Distilleries.