SIPO to Enable Updated Digital Access Service for Priority Documents
Beginning April 15, 2013, The State Intellectual Property Office of China (SIPO) starts Digital Access Service 2.0 operation. It is required to provide an Access Code in order to retrieve a foreign priority application filed in a foreign intellectual property office that participates in the WIPO DAS program. In addition, non-electronic applications are no longer applicable to DAS request before the SIPO.
(Source: SIPO)