The Institute of Astronomy and Astrophysics (IAA) has reached an agree
ment with Havard-Smithsonian Center for Astrophysics to extend the Sub
-mm array by two telescopes. IAA will deliver the low noise supercondu
cting receivers for the tao telescopes, and integrate the receivers to
the telescope. This paper is to report the current development of the
superconducting receivers at IAA.