Beijing Haitian Ruisheng Science Technology has seen a strong upwards swing lately, which has really helped boost its P/S figure . The last month did very little to improve the 51% share price decline over the last year, but it needs to keep going to repair the recent damage it has caused to investor portfolios . Using the price-to-sales ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future