... quality, prompt shipment, supply guarantee, monthly exports1000mt. Sodium Sulphide Flake 60%min ,Red Flake, Yellow Flake, Red Solid 1)Specifications 50ppm80ppm150ppm1500ppmNa2S60min60min60min60minNa2SO32.00max2.00max2.00max2 ... relationship with domestic manufactuers,has exported it to many countries. sodium sulphide