Synlait has successfully renewed the registration of its Dunsandel plant, allowing it to continue exporting canned infant formula to China.
The registration was issued by the General Administration of Customers of the Peoples' Republic of China (GACC).
Synlait chief executive Leon Clement said GACC had strict criteria that overseas manufacturers must meet to maintain registration.
Re-registration was required every four years and included a comprehensive assessment for which Synlait was asked to prove it had robust systems for change management, pathogen management and food incident management.
A three-day audit conducted by the Ministry for Primary Industries, on behalf of GACC, also included a full traceability exercise from raw materials through to export, as well as an assessment of Synlait's capability to meet China's rigorous regulatory requirements.