C12000 copper coil is made from a high-purity electrolytic copper, also known as ETP copper (Electrolytic Tough Pitch Copper). Its contains more than 99.9% copper, and small amounts of impurity elements such as oxygen, iron and sulfur.

C10200 copper coil is made from anly pure copper material known as oxygen free copper, with a purity of usually over 99.95%. Due to itsly low oxygen content, C10200 copper coil has excellent electrical and thermal conductivity, as well as good welding and processability.

C10100 copper coil is made from anly pure copper alloy with a copper content of more than 99.99%, giving it excellent electrical and thermal conductivity. This high-purity copper is very popular in the electrical and electronic industries where high conductivity and good processability are required.

C11000 copper coil is made from a copper-based alloy withly high purity, usually containing over 99.9% copper. This alloy has excellent electrical and thermal conductivity properties other than good corrosion resistance and mechanical strength.