Shandong Donge Steel Ball Group Co., Ltd. Was founded in 1988, to steel ball, tapered roller for bearings and other pieces of supporting the main and new energy, steel wire drawing, for mold manufacturing, packaging industries of rapid development of large-scale private and technology enterprises, having complete modern steel ball processing equipment a total of more than 2, 000 sets, product testing more than 260 sets of equipment. Seagull brand of steel ball, eight consecutive years by the China Quality Supervision, Inspection and Texting Centre sample were rated as excellent products. By country Bearing Technical Committee, the National Joint Committee of rolling bearings, Seagull has been assessed as the domestic industry only "Excellent Ball" certification enterprises. It is the largest production company of professional steel ball in China. Output, quality and efficiency of the country rank the forefront of the industry.

In June 1999 and June 2000, Shandong Donge Steel Ball Group Co., Ltd. Adopted the ISO9001: 2000 international quality system certification and the League of quality certification, in November 2003 adopted the ISO/TS16949 international quality certification and the League of quality certification. Product marketing network all over the country, including Seagull Steel Ball domestic market share for many years ranked first, at the same time to actively develop the international market, the products are being exported to Britain, the United States, Japan, Germany, Slovakia, Spain, South Korea, Italy and other countries.

Looking ahead, the Donge Steel Ball Group will continue to adhere to an effective, coordinated and healthy, scientific principle, and create industrial diversification, the development of large-scale and specialized industries operating pattern.