As per Section 63 Service of a summons on a corporation may
be effected by serving it on the secretary, local manager or
other principal officer of the corporation, or by letter sent by
registered post, addressed to the chief officer of the
corporation in India, in which case the service shall be deemed,
to have been effected when the letter would arrive in ordinary
course of post.
Explanation:- In this section 'corporation' means an
incorporated company or other body corporate and includes a
society registered under the Societies Registration Act.1860 (21
of 1860).