Pre-market: KongZhong, China BAK Battery and China Techfaith Wireless Comm. Tech. lead small-cap volume
KongZhong Corp. (Nasdaq: KONG), China BAK Battery Inc. (Nasdaq: CBAK) and China Techfaith Wireless Comm. Tech. Ltd (Nasdaq: CNTF) are the most actively traded companies in Friday pre-market trading among those with market capitalizations under $500 million:
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