4399在线视频免费观看

射線(xian)防(fang)護器(qi)材、鉛門(men)、鉛玻璃、鉛板(ban)、鉛衣、防(fang)輻射鉛屏風(feng)、鉛制(zhi)品、氣密門(men)生產(chan)、銷(xiao)售(shou)、安裝；輻射防(fang)護工(gong)(gong)程(cheng)、電磁屏蔽工(gong)(gong)程(cheng)、凈(jing)化工(gong)(gong)程(cheng)、機房(fang)空(kong)調系統工(gong)(gong)程(cheng)、放射性污水處理工(gong)(gong)程(cheng)、室內外裝飾裝修工(gong)(gong)程(cheng)施工(gong)(gong)；防(fang)輻射器(qi)材及材料(liao)、空(kong)氣凈(jing)化設備、測量儀器(qi)、建(jian)筑材料(liao)銷(xiao)售(shou)；工(gong)(gong)業探傷(shang)室、建(jian)筑工(gong)(gong)程(cheng)設計、施工(gong)(gong)。（依法須經批(pi)準的項目，經相關部(bu)門(men)批(pi)準后方可開展經營(ying)活動）