This week, the overall grades of 4 Commercial Services & Supplies stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

MSA Safety, Inc. (MSA) slips from a C to a D this week. MSA Safety, Inc. develops, makes, and supplies products that protect people’s health and safety. For more information, get Portfolio Grader’s complete analysis of MSA stock.

Team, Inc. (TISI) declines this week from a C to a D. Team, Inc. is a provider of specialty maintenance and construction services required in maintaining high temperature and high pressure piping systems and vessels that are utilized in the refining, petrochemical, power, pipeline, and other heavy industries. The company also gets F’s in earnings growth. For more information, get Portfolio Grader’s complete analysis of TISI stock.

Cypress Energy Partners LP (CELP) gets weaker ratings this week as last week’s C drops to a D. The company also gets F’s in earnings revisions, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CELP stock.

This is a rough week for Hudson Technologies, Inc. (HDSN). The company’s rating falls to D from the previous week’s C. Hudson Technologies, Inc. sells refrigerants, as well as provides a variety of related services. For more information, get Portfolio Grader’s complete analysis of HDSN 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.