 The European Union 's Restriction of Hazardous Substances Directive ( RoHS ) for reduction of lead has broadened bismuth 's use in electronics as a component of low @-@ melting point solders , as a replacement for traditional tin @-@ lead solders . Its low toxicity will be especially important for solders to be used in food processing equipment and copper water pipes , although it can also be used in other applications including those in the automobile industry , in the EU for example . 
