冰雪大篷车进校园

　　 12月20日，河北省张家口市桥西区工人新村街道印台沟社区与清河路小学共同开展冰雪大篷车进校园活动。现场设有模拟滑雪体验、桌上冰壶球等项目。图为同学们正在体验旱地冰壶项目。张力涛摄 光明图片

2025 Lte 4G SMS Broadcast Machine Parameters:
1. Vehicle mounted or portable SMS bomber
2. 700 letters per message
3. Maximum power 120W
4. The coverage radius can reach 8km
5. Up to 50000 SMS messages can be sent per hour
6. Use numbers or letters as the sender's name
7. Simultaneous long-distance and short-distance transmission
8. You only need to set the configuration once to use it without restriction.