4399免费视频

A級(ji)鍋爐的制(zhi)(zhi)(zhi)(zhi)造、安裝、改造、維修(xiu)；鍋爐配(pei)件(jian)(jian)、冶煉(lian)設(she)備(bei)(bei)(bei)、化工(gong)設(she)備(bei)(bei)(bei)、工(gong)礦(kuang)設(she)備(bei)(bei)(bei)、供(gong)暖設(she)備(bei)(bei)(bei)、玻璃鋼制(zhi)(zhi)(zhi)(zhi)品(pin)、起重機(ji)(ji)及(ji)配(pei)件(jian)(jian)、高壓(ya)(ya)加(jia)熱(re)器(qi)、換熱(re)器(qi)、冷凝冷卻器(qi)、橫管式初(chu)冷器(qi)的制(zhi)(zhi)(zhi)(zhi)造、銷售(shou)(shou)；礦(kuang)用(yong)機(ji)(ji)械設(she)備(bei)(bei)(bei)及(ji)配(pei)件(jian)(jian)、配(pei)電盤、制(zhi)(zhi)(zhi)(zhi)冷設(she)備(bei)(bei)(bei)的制(zhi)(zhi)(zhi)(zhi)造、銷售(shou)(shou)、維修(xiu)及(ji)清洗；節能(neng)環保設(she)備(bei)(bei)(bei)的設(she)計、制(zhi)(zhi)(zhi)(zhi)造、銷售(shou)(shou)；第一類壓(ya)(ya)力容(rong)器(qi)及(ji)第二類低(di)、中壓(ya)(ya)力容(rong)器(qi)的制(zhi)(zhi)(zhi)(zhi)造、維修(xiu)及(ji)改造；電器(qi)、機(ji)(ji)床、五金(jin)工(gong)具(ju)、紙品(pin)、鏈條、鋼材、建材、木材的銷售(shou)(shou)；貨(huo)物進出口業(ye)務；機(ji)(ji)電設(she)備(bei)(bei)(bei)安裝、維修(xiu)；機(ji)(ji)電工(gong)程的施(shi)工(gong)。（依(yi)法須經批(pi)準(zhun)的項(xiang)目，經相(xiang)關部門批(pi)準(zhun)后方可(ke)開(kai)展經營(ying)活動(dong)）