Ko te Rosin resin SOR138 he rosin glycerine resin i hangaia mo te ahumahi whakapiri wera wera, he painga o te tae marama, te waahi ngohengohe teitei, te teitei o te pokey me te pai o te wera wera.He tino pai mo te EVA wera wera whakapiri me nga paninga whakarewa wera me etahi atu ahumahi.