“5.3 Even though the issue can be decided on the sole ground whether the process amounts to manufacture or not, we would like to consider applicability of the second ground viz., exemption under Notification No. 8/2005-S.T. also, which provides for exemption from Service Tax to the goods produced on behalf of the client provided such exemption is allowed only when such goods are used by the principal manufacturer or further manufacture of other goods on which appropriate duty of excise is payable. The Notification also defines „appropriate duty of excise‟. According to the Notification, „appropriate duty of excise‟, shall not include „nil‟ rate of duty or duty of excise wholly exempt. We find ourselves in agreement with the submission that the Notification when read with the „appropriate duty of excise‟ would mean that only when the goods manufactured by the principal manufacturer attract „nil‟ rate of duty as per tariff or unconditional full exemption, the benefit of Notification No. 8/2005 is denied. In this case, the 100% EOU viz., M/s. Tyco Electronics to whom the appellants have supplied the goods on job work basis is eligible for exemption Notification No. 24/2003-C.E., dated 31-3-2003. It is the stand of the department that this notification exempts 100% EOU from payment of duty and therefore the appellant is not eligible for the benefit of Notification No. 8/2005-S.T. We find that Notification No. 24/2003-C.E., dated 31-3-2003 has a proviso which reads as under :