Who knows how Shanghai Shuangheng valve works? What is the strength?

As far as I know, Shuangheng Valve is a relatively large-scale valve enterprise in Shanghai with strong strength, but it is a production enterprise. Unlike many Shanghai valve enterprises, many of them are leather bag companies, but they are listed and outsourced without production. If you want to develop petrochemical nuclear power, you can find them and have a competitive inspection.