201 wire mesh is made of stainless steel 201 wire with 0% knickel, it is very popular in India. It is high density, no bubbles and no pinholes. And the mesh has a little performance of acid and alkali resistant.
201 wire mesh sizes in India market:
20 Mesh x 27 SWG x 4FT x 30M;
40 Mesh x 27 SWGx 4FT x 30M;
60 Mesh x 27 SWG x 4FT x 30M;
100 Mesh x 27 SWG x 4FT x 30M.
https://www.alexwiremesh.com/stainless-steel-wire-mesh/
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