Hi Michael
If you activated the Brazil localizations and run the objects DNL_CUST_TAX, DNL_CUST_TXJCD and DNL_CUST_BRAZIL the fields NCM Code, Material Usage, Material origin, Mat. CFOP category, Produced in-house are tranfered from SAP ECC to your products in SAP SRM (transaction COMMPR01), so when you transfer the products from any catalog the field automatically will be filled.
Regards
Nilson