2. If it is screening ordinary chemical or metallurgical powders and the screening mesh size is ≤ 500 mesh, it is recommended to choose S304 stainless steel to make the sieve.
3. If screening high-purity electronic materials such as semiconductor silicon powder and ITO targets, it is better to choose nylon mesh because nylon material can avoid the risk of Fe/Ni/Cr ion migration that stainless steel mesh may bring.