Tianjin purui instrument co., LTD., established in March 2010, registered capital of 10 million yuan, the company has 60 employees, including technical engineer 30 people, Dr. 2 people, senior engineer 3 people, business area of 5000 square meters, instruments and equipment valued at over 800 yuan: ten thousand oscilloscope 6, desktop power 21 sets, electronic load 6, 16 sets of multimeter, pressure meter, insulation resistance tester, leakage current tester, push pull test platform 1, etc.