Nickel Alloy Copper Foils & Sheets C68700, C70600, C71500 for Roofing & Decoration Elevate your industrial and architectural projects with our premium alloy copper sheets and foils, featuring an exceptional minimum copper purity of 99.99%. Sourced from the renowned Tisco brand in Jiangsu, China, this product line includes specialized grades like C68700 (Aluminum Brass), C70600 (Copper-Nickel 90/10), and C71500 (Copper-Nickel 70/30), renowned for their superior corrosion