(LEAD) Unionized workers of Hyundai Motor set to vote on wage hike deal

(ATTN: UPDATES with reports of Hyundai Motor's China sales in last 4 paras)

SEOUL, Aug. 25 (Yonhap) -- Tens of thousands of unionized workers at South Korea's top automaker Hyundai Motor Co. will decide this week whether to accept a tentative agreemen