These types of tests are meant for establishing performance characteristics of machines that are in or ready for commercial production.
The following types of tests are included in this category:
1. Initial Commercial tests on indigenous or imported machines ready for commercial production.
2. Batch test on machines which have already undergone initial commercial test and/or are being manufactured commercially in the country.
Confidential test are to carry out for providing confidential information on the performance of machines which are ready for commercial or non commercial production. It provides special data that may require by the manufacturer to improve the design.