Sorry for late response.
Fyi, we have Internal Test, called as ‘Additional Test’, which implemented for adidas Inner box for this moment, and Slide Angle Test is one of testing for this Internal Test.
This exercise already sounded to Kiang (attached is my MoM with her), and we already implemented it starting Sept 2015.
Kindly please discuss with kiang on detail information for this Internal Test.
Let me know if there is a need further info/clarification