NEW YORK ( TheStreet) -- Shares of Shengkai Innovations (Nasdaq: VALV) were gapping down Monday morning with an open price 39.6% lower than Friday's closing price. The stock closed at $1.97 Friday and opened today's trading at $1.19. The average volume for Shengkai Innovations has been 645,600 shares per day over the past 30 days. Shengkai Innovations has a market cap of $55.4 million and is part of the services sector and wholesale industry. Shengkai Innovations, Inc., through its subsidiaries, designs, manufactures, and distributes ceramic valves for industrial use in the People's Republic of China. TheStreet Ratings rates Shengkai Innovations as a sell. Among the areas we feel are negative, one of the most important has been a generally disappointing historical performance in the stock itself. You can view the full Shengkai Innovations Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping down? Get free SMS text alerts sent to you when the action happens by texting DOWN to 95370 or select from multiple alert options.