Advice from the New Zealand Ministry of Consumer Affairs produces a range of guidance on the import of safe products under the Fair Trading and Consumer Guarantees Trading Acts. One element of this is statements of conformity assessment for specific products where ‘goods may require certification to prove that they comply with product standards. Unless your consignment has certification to prove that it complies with the relevant Standard, it is likely to be stopped at Customs. You, as the importer, are liable for producing the necessary documents to prove that the goods may be brought into the country. Test Certificates must be from a laboratory which is accredited for the specific tests required’.
This covers a range of products, including toys, bikes and cots.
High hazard toys (and some other consumer items) must be tested in an accredited lab. (New Zealand)