We received your application for permanent residence on January 4, 2010.
We reviewed your application and sent you a letter on February 22, 2010. Please consider delays in mail delivery before contacting us.
Your application and supporting documents were received by the Beijing office. They are pending review.
We transferred your application to the Beijing office on March 2, 2010. The Beijing office may contact you.
Your application was reviewed and we started processing on April 28, 2010.
这是不是说我4月28日Ip的?