The present product provides COM, ActiveX, DLL and other ways for developing, giving the developers multiple choice.
Providing support to multiple proxy servers, such as HTTP and socks4/4a/5.
A function of file compression that reduces the transmission size of the file.
A function of file checkup that guarantees the veracity of files.
The present product supports resuming broken transmission.
Supporting the common updating of files, date comparison updating and performing a variety of ways of upgrade.
The end user needs no support of other class libraries except the present product.