We take great pride in being able to supply our triply clad steel coils/cooper clad steel coils to our Asia customer for their newly-developed design equipment. The material combination is copper clad stainless steel 316 clad copper. That is to say, the sandwich type. And the thickness combination is (0.5 + 0.4 + 0.5) mm. The ball core is Φ500, and the sizes can be customized for all of our customers. We will put these clad steel coils into the wooden package so as to avoid any possible damage during the transit and storage. With us, all of our wooden cases come with fumigation certificate. your order is safe, and your project is safe.