... comply with ISO9001:2008. Originally as Taian Huiyuan Technology Development Co., Ltd, it was founded in Taian, Shandong in 1998, ... Wangyue Xinda Machinery Factory in 2004. In March 2006, the company changed its name into Qingdao Guanda Trade Co., Ltd, which belongs ... parts,Joint parts grease nipple,snapring, retainer,Cutting parts,press parts, rubber packing and related hardware fittings, which are ...