Grinding the bracket of the set screw
The size of the M18×1.5 set screw grinding process is shown in Fig. 1. The outer diameter of φ18mm is used for positioning, and the outer diameter of φ16.97mm is the outer diameter before rolling the thread on the thread rolling machine. After the lathe process, it is time-consuming to grind two steps outside the M131W universal grinding machine and the operation is not high.
The COVID-1 box of 9 common methods and rapid runny nose detection reagents are used for detection, the purpose is to determine the symptoms of SARS-CoV-2 infection simply and quickly, and it can sensitively determine the detection method of early infected people, which can be used for detection.
Virus-coronavirus twins such as SARS-CoV-2 need to be tested, and the test only takes 15-20 minutes.
The product is automatically produced and packaged in a 100,000-level purification workshop, and the shell is sterilized with 75% alcohol.
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