The subsidiary company of Shenzhen Zhengdongxing Communication Equipment Co., Ltd. ---Luoyang Zhengshuo Electronic Technology Co., Ltd. developed the
2023-10-07
The subsidiary company of Shenzhen Zhengdongxing Communication Equipment Co., Ltd. ---Luoyang Zhengshuo Electronic Technology Co., Ltd. developed the "QJX-1 electronic detonator and initiating system" through the appraisal of scientific and...
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