Complex sentence: They are made by a specialised machine which cuts thick wire into a suitable length and then die punches the head of the pin, the supplier normally runs specialised machinery that is capable of producing large amounts of products at a high rate for a low cost.
Split into simpler sentences: They are made by a specialised machine which cuts thick wire into a suitable length and then die punches the head of the pin. The supplier normally runs specialised machinery that is capable of producing large amounts of products at a high rate for a low cost.