Singapore shares may open lower on Friday as disappointing US earnings and fears of further monetary tightening in China turned sentiment sour. Singapore’s benchmark Straits Times Index <.FTSTI> was down 1.13% on Thursday to 3,205.48 points.

Here are some stocks and factors to watch:

Singapore Technologies Engineering (STEG.SI) may be in focus after it said on Thursday its aerospace arm secured $320 million worth of maintenance contracts in the fourth quarter of 2010.

Mapletree Logistics Trust (MAPL.SI) said on Thursday its fourth-quarter distribution per unit fell 2.5% year-on-year to $1.55. But excluding the one-off $2.5 million consideration to extend leases and licenses, DPU rose 4.7%.

Ascott Residence Trust (ASRT.SI) said on Friday its fourth-quarter distribution per unit rose 16% year-on-year to S$2.16. Revenue increased 58% to $72.8 million, helped by the additional revenue from 28 properties injected into the firm’s portfolio.

CapitaLand (CATL.SI), Southeast Asia’s largest property developer, said on Thursday some of the operations, investment properties and developments of its Australian unit Australand have been affected by the recent floods in Queensland.

Dukang Distillers (DDHL.SI), a Singapore-listed Chinese producer and seller of alcohol products, said on Thursday it had received approval from Taiwan authorities for the listing of 130 million Taiwan Depository Receipts on the Taiwan Stock Exchange.