general manager: duan jinting
address: qingdao jiaozhou beiguan industrial park road in the reservoir 6
business hotline: 0532-82291116/13806420399
service hotline: 0532-82291117
fax: 0532-82291118
website: www.zhongzhida.cn, www.qdzhongzhida.com
e-mail: zzda@zhongzhida.cn
zip code: 266300
the automatic batching and alloying device of the cupola furnace independently developed by qingdao zhongzhida company passed the examination of the patent office of the state intellectual property office and obtained the utility model patent certificate.
the 360-degree electric rotary spheroidizing vacuum cleaner independently developed by qingdao zhongzhida company passed the examination of the patent office of the state intellectual property office and obtained the utility model patent certificate.
the high-efficiency soot desulfurization device independently developed by qingdao zhongzhida company has passed the examination of the patent office of the state intellectual property office and obtained the utility model patent certificate.
the lift-type fuel bakeware independently developed by qingdao zhongzhida company passed the examination of the patent office of the state intellectual property office and obtained the utility model patent certificate.
the automatic matching alloy device of the electric furnace after independent research and development by qingdao zhongzhida company passed the examination of the patent office of the state intellectual property office and obtained the utility model patent certificate.
