Coastal areas of Shandong, Zhejiang and Guangdong to spearhead sector development   The oceans have often played an important role in shaping the history and charting the destiny of nations. But in modern times the oceans have taken on a different hue with a strong blue (marine) economy holding the promise of steady and sustained economic growth.   China, despite its vast huge coastal resources, has never been able to gain significant economic advantage from them due to...