CF will produce ammonium sulfate containing ammonium

According to overseas media reports, US fertilizer manufacturer CF Holdings recently signed a cooperation agreement with Shell Petroleum Corporation (Shell). CF will use Shell's sulfur processing technology for the development of ammonium sulfate products (MAPS). Production is expected to

Standards and definitions for valves

The gate valve is one of the commonly used shut-off valves. It is mainly used to turn on or off the medium in the pipeline. It is not suitable for regulating the flow of the medium. The gate valve is suitable for a wide range of pressure, temperature and caliber, especially fo