Sinic has a junk rating from Fitch, which downgraded its outlook to negative on Friday. Other property stocks such as Sunac, China's No.4 property developer, tumbled 10.5%, while state-backed Greentown China shed around 6.7%. Guangzhou R&F Properties Co said on Monday it was raising as much as $2.5 billion by borrowing from major shareholders and selling a subsidiary, highlighting the scramble for cash as distress signals spread in the sector.