$TPAC I will do my best to give a very preliminar
Post# of 22940
First, here is the business plan: http://tpacbearings.com/sites/default/files/t...n-2015.pdf I will give whatever information I can find and will give page numbers to assist in answering your questions.
You asked what these parts do and how often they need replaced. On page 11, there is an infographic that gives a brief overview of the purpose and location of bearings. For a bit more detail, here is another document that seems to provide for additional information: http://www1.coe.neu.edu/~smuftu/docs/2009/ME5...inosa).pdf As for how often they need to be replaced: each bearing is rated at 25,000 rotations, with the company seeking a 100,000 rotation acceptable degradation rate by year's end. What may also be of use to your question as to what the parts do, on page 10(of the business plan pdf), there is an Appendix I -Bearings 101 section. The body of text in that section will then naturally segue to the infographic I alluded to above(for purposes of a simple overview, or quick highlighting). How long the bearings last, if I am to hypothesize, would vary upon what part of the plane the bearings are located within, how many rotations each bearing undergoes per "X number of miles", and how often the aircraft is flown.
China is building the COMAC C919, but there are parts makers/distributors and aircraft assembly all over. What TPAC provides is a specialty product within a niche market. Only a very small handful of companies worldwide are NAVAIR certified for bearings, with our variation being self-lubricating. There is a ton of info within the business plan, beginning on page 1, that discusses both the China market, and the global market at large, as well as the advantages to going with the TPAC product. AVIC and TPAC have signed an LOI and are finalizing discussions and terms of the joint venture/partnership. On page 2, it states that AVIC alone, is host to 60 offices within 29 countries. That info is in the inforgraphic in blue. Just above that infographic, is a paragraph that begins with "For reference". That paragraph depicts the mechanics and nature of the partnership; though, for clarification, in the body of text just above that, it is stated that while the partnership has many advantages, TPAC has sufficient capitol to be self-sustaining, regardless.
For further information that cannot be answered on this message board, here is a document that will assist in getting questions answered in more professional detail: http://tpacbearings.com/news/opening-lines-communication The first email address has been the one seen as most successful for shareholder inquiry.