Environmentally friendly cables are cables made from materials with low environmental impact. ★翻訳対象外★ In 1998, at the request of the Ministry of Land, Infrastructure, Transport and Tourism, the Japan Industrial Standard (JIS) for this type of cable was established. Environmentally friendly cables do not contain heavy metals, such as lead, and halogen elements that are found in conventional cables; for this reason, the cables emit no harmful gases when incinerated and do not contaminate the soil when buried in a landfill. The coating material used is exclusively polyethylene-based and features better heat resistance and chemical resistance properties, as well as excellent recyclability compared to conventional PVC cables. Polyethylene-based materials are more elastic than vinyl-based materials and slightly more rigid; for this reason, the cables should be handled with care when removing the coating or flexing.