Beijing Super Q Technology Co., Ltd. has EV series oil-lubricated 600L, 1200L, 1600L compound molecular pumps and 3600L turbine type molecular pumps; grease-lubricated 300L, 650L, 1300L, 2000L comp...
Many people may see gas ballast in the instructions of some oil sealed vacuum pumps. For example, there may be two types of vacuum degree for rotary vane vacuum pumps: one is the value of gas balla...
1. Flange connection
This is the most commonly used form of connection in valves. According to the shape of the joint surface, it can be divided into the following categories:
● Smooth type: it is ...
The helium mass spectrometer leak detector is based on mass spectrometry technology and employs the helium tracer method for leak detection. Due to its high precision and reliability, it has become...
I. Mechanical pumps
The main function of the mechanical pump is to provide the necessary pre-stage vacuum for the start-up of the turbomolecular pump. Commonly used mechanical pumps include mainly ...
The Chinese government has spent $14.84 billion on green building projects as it focuses more on reducing building pollution.
It also spent $787 million on green building materials for specially de...