An jefar da mara amfani da yashi alkali phenolic resin sand ko sodium silicate-bonded san tsari.Taurin saman saman ya kai mafi ƙarancin HRC48-58 tare da zurfin taurin tsakanin 4-6mm (HRC45), bayan tsarin maganin zafi. juriya a ƙarƙashin matsanancin yanayin aiki.