All businesses interviewed were aware of certificate of origin requirements and commodity codes - businesses reported no corresponding difficulties or uncertainties when probed.
Roedd pob busnes a gyfwelwyd yn ymwybodol o ofynion tystysgrifau tarddiad a chodau nwyddau - ni nododd y busnesau unrhyw anawsterau nac ansicrwydd cyfatebol pan holwyd hwy.