An kafa shi a shekara ta 1996, Shanghai Dazhong kai sarrafa kayan aiki Co., Ltd. ne masana'antun sarrafa bawul (daidaitawa bawul) kayayyakin. Kamfanin da "DA.TONG" a matsayin rajista alamar kasuwanci, da manyan kayayyakin ne pneumatic, lantarki sarrafa bawul, ball bawul, Butterfly bawul, yadu ake amfani da atomatik sarrafa tsarin kwal sinadarai, petrochemical, wutar lantarki, karfe da sauran masana'antu samar da tsari. Daga cikinsu, pneumatic lalata juriya kusurwa kula bawul, pneumatic lalata juriya eccentric juyawa kula bawul, pneumatic high matsin lamba bambancin ball bawul jerin kayayyakin da aka ci gaba da ruwa coal gasification furnace na'urar, ta aiki rayuwa, kula da aiki m da irin wannan shigo da kayayyakin. Kamfanin ya ba da daraja ga ingancin gudanarwa, da farkon ƙirƙirar ya wuce ISO9001 ingancin gudanarwa tsarin takardar shaidar, samun kasa ingancin dubawa Babban Hukumar "musamman kayan aiki masana'antu lasisi (matsin lamba bututun abubuwa) A1 matakin takardar shaidar. Kamfanin ya wuce ISO14001 muhalli management tsarin; OHASA18001 tsarin kula da lafiyar aiki; China Petrochemical Group Company Tsaro, Muhalli da Lafiya (HSE) Tsarin Gudanar da Tsarin Takaddun shaida guda uku. A cikin 'yan shekarun nan, kamfanin ya ci gaba da saka hannun jari mai yawa don fasahar gyare-gyare, da ci gaban sabbin kayayyaki a matsayin jagora, sabunta kayan aiki, haɓaka baiwa; Kamfanin ci gaba da zuba jari, sayi wani rukuni na CNC lathe, CNC milling inji, ci gaba bore inji, milling inji da sauran aiki kayan aiki, kuma ƙara karfe spectrum analyzer, na'ura mai aiki da karfin ruwa bawul gwaji tebur da sauran gwaji kayan aiki da kuma kayan aiki. Ci gaba processing kayan aiki da kuma gwaji kayan aiki, high inganci R & D tawagar, sosai karfafa kamfanin kasuwar gasa. Shanghai Chaochang kai sarrafa kayan aiki Co., Ltd. duk ma'aikatan za su, kamar yadda kullum, bi alkawarin samar da kayayyaki da sabis ga masu amfani, maraba da masu amfani da abokai ziyarci, jagoranci aiki.