Recently, a high school in Shanghai purchased a batch of cell phone signal jammers on topsignaljammer.com. Before purchasing, our salesperson and customer Miss Wang learned that the school has a total of 60 classrooms in the high school department and 45 classrooms in the junior high school. There are several conference rooms. After testing the signal strength, I recommended the SG-Z10 shielding device developed and produced by our company to Ms. Wang. The total power of this product is 55W, with 11 built-in channels. The SG-Z10 can shield 2G, 3G, 4G and 5G. , 2.4G(WIFI), 5.8G(WIFI), 5.2G(WIFI), which are relatively rare high-power mobile phone signal jammer in the test room on the market, and also configure a suitable shielding scheme for Miss Wang. After customer feedback, the test effect is very good and stable, and it has been used in the test. At present, a strategic cooperation agreement has been signed with the school, and we will also adhere to the principle of customer first and do a good job in our after-sales guidance service.