Looking for Compression algorithm

[minfuli]

Dear Sir: We are looking for the Algorithm of data compression. We know  MPEG1, MPEG2, MP3 which are compressions for Audio & Video. Its allow the data lose when compressed . But We need the algorithm of loseless compression. Like BIOS compression, Modem, Tape Compression....  Can you provide any algorithm of loseless compression.   Thanks a lot Minfu Li VP GTK