** Shares of Bama Tea 6980.HK jump 13.1% to HK$31, their highest point since February 16
** Stock set for biggest one-day pct rise since November 13
** China-based tea products developer says it intends to repurchase up to 5.3 mln H shares, or 10% of the issued share capital, for 250 mln yuan ($36.64 mln) to demonstrate its confidence in its business outlook and prospects
** Says the H shares traded on the market are undervalued and the proposed H share repurchase will enhance returns to the shareholders
** YTD, stock up 5.2%, benchmark Hang Seng Index .HSI up 2%
($1 = 6.8229 Chinese yuan)
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))