VERZONE GREEN SH-K is an environmentally friendly, non-toxic Volatile Corrosion Inhibitor (VCI) providing excellent, oil-free protection for multi-metals. Each 2g unit protects 15 liters for 1-2 years in enclosures. Simple to use, it's placed with metal components in sealed environments. Tested per JIS-Z-1519 VCI Anti-rust standards, it ensures superb corrosion protection for steel and efficient multi-metal protection for steel, cast steel, copper, zinc, aluminum, tin, bronze, brass, and silver, proven under cyclic temperature/humidity conditions (50°C/90% for 16h, 5°C/90% for 8h, 7 cycles).