Oct 10 (Reuters) - Poly Developments and Holdings Group Co Ltd: * SEPTEMBER CONTRACT SALES DOWN 1.8% Y/Y TO 20.5 BILLION YUAN ($2.88 billion) Source text Further company coverage: ($1 = 7.1240 Chinese yuan renminbi) (Reporting by Beijing Newsroom) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)