Qingdao Duobang Manufacture & Trade Co., Ltd Building 2002, location at Economic & Technological Development zone, specializes in producing and selling seamless underwear with the total investment of RMB5.8million and the workshop area of 20,000 odd esq... The company introduces Italian ‘SANTONI’ one-shaped seamless knitting underwear machine. Japanese industrial sartor us. Taiwan and Korean dyed equipments to produce the seamless underwear elaborately.