首页>
外国专利>
a means to wiazania excess formaldehyde in urea tworzywach formaldehydowych, way wiazania excess formaldehyde in products containing any resin urea formaldehyde
a means to wiazania excess formaldehyde in urea tworzywach formaldehydowych, way wiazania excess formaldehyde in products containing any resin urea formaldehyde