Wen Jiabao, the Chinese prime minister, made the offer on Saturday at the start of a two-day visit to Greece, his first stop on a tour of Europe.During talks with George Papandreou, the Greek prime minister, Wen said China would double its trade ties with Greece over the next five years, underscoring Beijing's use of economic strength to win friends."China will undertake a great effort to support euro zone countries and Greece to overcome the crisis," Wen said.english.aljazeera.net