This week, three Commercial Services stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, Courier Corporation (NASDAQ:CRRC) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Courier engages in printing, publishing, and selling books. In Portfolio Grader’s specific subcategories of Earnings Growth and Cash Flow, CRRC also gets A’s. For more information, get Portfolio Grader’s complete analysis of CRRC stock.

This is a strong week for United Stationers (NASDAQ:USTR). The company’s rating climbs to B from the previous week’s C. United Stationers is a wholesale distributor of business products, including technology products, office products, office furniture, janitorial and breakroom supplies and industrial supplies. For more information, get Portfolio Grader’s complete analysis of USTR stock.

China Recycling Energy (NASDAQ:CREG) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. China Recycling Energy engages in the provision of energy savings and recycling products and services. Shares of CREG have increased 57.1% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of CREG stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.