Signs are emerging that a record 10-week losing streak for China’s benchmark stock index has prompted state-backed funds to step up their presence in the market.Inflows into a basket of exchange-traded funds favored by the so-called National Team last week surged to the highest since July, according to data compiled by Bloomberg. While there’s no official confirmation that state funds are boosting purchases, the size and timing of the flows have many market participants convinced that Beijing is looking to support the market.The latest buying bears the hallmarks of large institutions moving against the market’s decline, according to China Securities Co. analysts including Yao Ziwei.