SINGAPORE (Reuters) - Tencent Holdings Ltd and Samsung Electronics Co Ltd are racing to be crowned Asia's most valuable company as expectations for robust earnings growth push their share prices to record highs.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=G1kclivITgw:q5z7NLbiF4g:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=G1kclivITgw:q5z7NLbiF4g:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=G1kclivITgw:q5z7NLbiF4g:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=G1kclivITgw:q5z7NLbiF4g:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=G1kclivITgw:q5z7NLbiF4g:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/G1kclivITgw" height="1" width="1" alt="" />