Nickel wire mesh is woven from pure nickel wire material, and its nickel content is not less than 99%, and the highest is 99.99%. And according to the level of nickel content is usually divided into N2, N4, N6 and N8, and other types. The most commonly used nickel wire materials are N4 and N6, in which the nickel content of N4 exceeds 99.9% and that of N6 exceeds 99.5%. The highest nickel content is N2, which exceeds 99.98%, and the lowest nickel content is N8, which is 99.0%.