... plate, etc.(4) Leather industry: leather tanning agent, deliming agent, and neutralizer.(5) Rubber industry: natural rubber ... printing mordant, fiber and paper staining agent, processing agent, plasticizing agent, food antistaling agent, animal fodder additive, etc.Usage: ... Age resister, etc.4 Leather industry: Tanning, deliming agent, neutralizeretc.5 Textile industry: Natural Rubber6 Rubber industry: ...