2.5*2.5MM 45-70GSM 4.0*4.0MM 60-200GSM 5.0*5.0MM 60-200GSM 4.0*5.0MM 60-200GSM 10*10MM 60-160GSM Special items can be made according to requirement. High strength, flexibilities and structure stabilities. Good alkali resistance of over 65%. ETAG,CE,ITB certification