** Hong Kong shares of Semiconductor Manufacturing International Corp 0981.HK (SMIC) fall 2.9% to HK$73.4, snapping two straight sessions of gains, and on course for the biggest one-day pct drop since Oct 31
** Shanghai-listed stock 688981.SS eases 1.9% to 120.81 yuan
** China's largest contract chipmaker on Friday said growing worries about a shortage of memory chips are prompting its customers to hold back their orders for Q1 next year
** Says cars and smartphones makers that use memory will face pricing pressure and supply uncertainty next year
** SMIC shipped 2.5 million equivalent wafers in Q3, up 4.6% from Q2
** YTD, Hong Kong stock up 136%, Shanghai shares up 27.8%, Hang Seng TECH Index .HSTECH up 30.9%
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))