The use of specialized, compatible fasteners and accessories is mandatory for to preserve the system's structural integrity and inherent corrosion resistance over its multi-decade service life. All fasteners, screws, and clips must be made from high-grade stainless steel (304 or 316) to ensure they possess superior corrosion resistance that matches or exceeds the aluminum panel itsel... https://kkroofspecialist.com.sg/aluminum-metal-roofing-singapore/