This week, the overall grades of four electrical equipment stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Jinpan International (JST) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. Jinpan International produces silicon wafers, solar cells, and solar modules. For Portfolio Grader’s specific subcategory of Sales Growth, JST also gets an F. To get an in-depth look at JST, get Portfolio Grader’s complete analysis of JST stock.

Hydrogenics Corporation (HYGS) earns a D this week, falling from last week’s grade of C. Hydrogenics designs, develops, and manufactures industrial grade proton-exchange membrane fuel cell automated test stations. The stock gets F’s in Earnings Revisions and Equity. For more information, get Portfolio Grader’s complete analysis of HYGS stock.

AZZ incorporated (AZZ) experiences a ratings drop this week, going from last week’s C to a D. AZZ manufactures electrical equipment and components. To get an in-depth look at AZZ, get Portfolio Grader’s complete analysis of AZZ stock.

LSI Industries’ (LYTS) rating falls this week to an F (“strong sell”), down from last week’s D (“sell”). LSI Industries designs, manufactures, and markets a variety of lighting fixtures, menu board systems, and graphic products. The stock currently has a trailing PE Ratio of 309.00. For more information, get Portfolio Grader’s complete analysis of LYTS 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.