(Repeats from Thursday; no change to text)

SHANGHAI, May 31 (Reuters) - Global market research and index company MSCI Inc will add roughly 230 China-listed shares to its emerging market benchmark in a two-step process starting on June 1, a move expected to drive a surge of foreign money into the country's stock markets.

MSCI's decision a year ago to include yuan-denominated Chinese stocks, or "A-shares", into its emerging market (EM) index triggered a rally in Chinese blue-chips in 2017, though the market has corrected this year amid rising borrowing costs and fears of a Sino-U.S. trade war.

Foreign buying of Chinese stocks was tepid on Thursday on the last trading day before their inclusion.

WHAT, EXACTLY, IS THE MSCI INCLUSION?

The U.S.-based creator of widely-watched stock indices, is adding A-shares to its benchmark Emerging Markets and All Country World Index indices. The firms are predominantly blue chips such as SAIC Motor Corp and liquor maker Kweichow Moutai Co Ltd.

Late on Wednesday, MSCI tweaked the MSCI China A Inclusion Index, dropping telecom equipment and smartphone maker ZTE Corp , and four other companies, whose shares have been suspended.

WHY IS THIS IMPORTANT?

MSCI's EM index is tracked by funds with assets under management in excess of $1.9 trillion. That means when Chinese shares are added to the index, money that follows the benchmark will have to buy Chinese stocks to avoid deviation.

Some analysts estimate about $20 billion will initially flow into Chinese stocks, rising to $300 billion if there is full inclusion, as many expect. Some investors, however, predict much smaller inflows in the short term.

The A-shares included initially will have an aggregate weight of 0.39 percent in the MSCI Emerging Markets Index at a 2.5 percent partial inclusion factor. The second phase of entry will occur in September.

Further inclusion could include a higher weighting and mid-cap shares. A full inclusion would see A-shares account for about 18 percent of the MSCI EM index.

WHY DIDN'T IT HAPPEN SOONER?

In 2013, MSCI put A-shares on a review list but did not include them in indexes, citing issues including capital mobility restrictions and uncertainties around taxes.

Finally, in June 2017, MSCI announced the partial inclusion this year following a fourth consultation with global investors, recognising China's efforts to reform its capital markets.

HOW CAN FOREIGNERS BUY CHINESE SHARES?

Since China's markets are not fully open to foreigners, the main channel for MSCI-related share purchases will be the Shanghai and Shenzhen "stock connect" links with Hong Kong.