Introductionnowadaysalmosteverytanneryusessulphidesintheprocessoftransforminganimalhideintoleather.mostlyitissodiumsulphideand(or)sodiumhydrosulphide.thesulphidesarenotdangerouswhentheyareinstronglyal published presentations and documents on DocSlides.
IntroductionNowadaysalmosteverytanneryusessulphide...
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