Depending on the product being exported to China, up to three Chinese authorities have been designated with regulatory roles in the approval processes for medical devices. All medical and dental equipment must be registered with the State Drug Administration (SDA) before being sold and distributed in China. The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (AQSIQ) is entrusted with the task of establishing technical standards for import and export through compulsory product certification. Furthermore, the State Administration for Technical and Quality Supervision is responsible for certifying all pressure vessels.