4 Commercial Services & Supplies stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

The rating of MSA Safety, Inc. (MSA) moves up this week, rising from a C to a B. MSA Safety, Inc. develops, makes, and supplies products that protect people’s health and safety. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of MSA stock.

ABM Industries Incorporated (ABM) shows solid improvement this week. The company’s rating rises from a C to a B. ABM Industries Incorporated is a facility services contractor that provides janitorial, parking, security, and engineering services for commercial, industrial, institutional, and retail facilities. For more information, get Portfolio Grader’s complete analysis of ABM stock.

Progressive Waste Solutions Ltd. (BIN) boosts its rating from a C to a B this week. Progressive Waste Solutions Ltd. provides non-hazardous solid waste collection and landfill disposal services for commercial, industrial and residential customers in British Columbia, Alberta, Manitoba, Ontario and Quebec. For more information, get Portfolio Grader’s complete analysis of BIN stock.

ACCO Brands Corporation’s (ACCO) ratings are looking better this week, moving up to a B from last week’s C. ACCO Brands Corporation engages in the design, manufacture, marketing, and distribution of school and office products primarily in the United States, Northern Europe, Canada, Australia, Brazil, and Mexico. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of ACCO 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.