​Dongguan Meijun Automation Equipment has newly launched a pneumatic control valve, sandblasting tank pneumatic control valve, and three-way command valve, which are used to control the air intake and exhaust of the sandblasting tank and the sand adjustment valve. The new model has been improved on the basis of the old model, and the use effect is slightly better than the old model. The new valve is made of copper core and cast iron valve body.