Earlier this week engineer Weir posted an unscheduled trading update - which proved a barnstormer. The Telegraph's Questor remains a bull of the group's end markets. The urbanisation of Asian nations as they get richer is a trend that is not going to finish soon - and this process needs power and materials. Weir's products are part of the process of making this happen and the shares are a new buy.It was undoubtedly a good day for investors in Filtrona yesterday as the group surprised the City by saying it was doing better than expected. The dividend yield alone justifies a buy recommendation and yesterday's share price jump shows that Filtrona is now on the market's radar. The case for buying shares in Filtrona is compelling and investors should fill their boots. Buy, says the Independent.Inter-dealer broker Tullett Prebon is a sound business, well run and it will recover with financial market. The shares are up 12pc in a month compared with the market down 1pc. The shares are still a buy, according to the Telegraph.There is plenty to recommend in Harvey Nash's shares, not least its progressive dividend policy, which in 2009 delivered a 10 per cent increase in the total divi. Furthermore, shares in Harvey Nash, which trade on a 2011 price to earnings ratio of 9.6, now look good value and are at a substantial discount to rivals Michael Page and Hays, according to analysts at Numis. The Independent says buy.RPC is Europe's leading supplier of "rigid plastic packaging". While there are question-marks over the volatile polymer price, the recovery in sales in Europe should help to drive volume growth. Analysts expect sales to rise next year. At a price of 9.1 times estimated 2010 earnings and expectations of a 4.4 per cent dividend yield next year, this looks worth a pop. Buy, says the Independent.Please note: Digital Look provides a round-up of news, tips and information that is impacting share prices and the market. Digital Look cannot take any responsibility for information provided by third parties. This is for your general information only as not intended to be relied upon by users in making an investment decision or any other decision. Please obtain a copy of the relevant publication and carry out your own research before considering acting on any of this information.