4001 Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip

4001 (01/1988-..) Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip 40011000 (01/1988-..) Natural rubber latex, whether or not prevulcanised 40012100 (01/1988-..) Smoked sheets of natural rubber 40012200 (01/1988-..) Technically specified natural rubber `TSNR` 40012900 (01/1999-..) Natural rubber in primary forms or in plates, sheets or strip (excl. smoked sheets, technically specified natural rubber `TSNR` and natural rubber latex, whether or not prevulcanised) 40012910 (01/1988-12/1998) Natural rubber in crepe form `crepe sheets` 40012990 (01/1988-12/1998) Natural rubber in primary forms or in plates, sheets or strip (excl. smoked sheets, technically specified natural rubber `TSNR`, crepe sheets and natural rubber latex, whether or not prevulcanized) 40013000 (01/1988-..) Balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip (excl. natural rubber, whether or not prevulcanised)