Zheng Mao Group Co., Ltd. (originally known as “Zhenjiang Anchor Chain Factory”), founded in 1974, is the first modern electric welding anchor chain manufacturer in China. The mooring chains and marine chains developed by this company are the leading products. “San Shan” brand is a “Jiangsu Famous Trademark”. It has become a specialized manufacturer with annual yield of 80,000t anchor chains and mooring chains of multiple varieties and complete specifications.


The company is located in the south suburbs of Zhenjiang, Jiangsu and has an area of more than 250,000m2. Through continuous technical innovations, a technical team with research-level senior engineers and senior engineers as well as a team with senior technicians, technicians and management personnel has been formed.


The company has 12 sets of advanced chain production lines, 6 sets of heat treatment furnaces, various metal cutting machines as well as advanced testing means, 400T fatigue test machine and 2000KN, 5000KN, 12000KN, 20000KN chain tensile testing machines.


The company passed the certifications of ISO9001 Quality Management System at the end of 1996 (first in the industry in China), OHSMS 18001 Occupational Health and Safety Management System and ISO14001 Environmental Management System in 2008. Its marine chains and accessories have obtained the approval certificates of ten classification societies:CCS,LR,GL,ABS,DNV,NK,BV,RS,RINA,KB. Class R3, R3s, R4 mooring chains meet the standards of DNV, ABS, LR and BV and get the approval certificates. The company also passed the certification of API Q1 in November 1999 and obtained the formal certificate of using API monogram on the products. “San Shan” chains are exported to more than 30 countries and regions with an annual foreign exchange of 60 million dollars, such as Japan, South Korea, USA, Germany, Norway, etc., becoming the national export base of mechanical and electrical products.


The company was asserted as “High-tech Enterprise” by Jiangsu Science and Technology Department in 1999, “National Torch Plan Key High-tech Enterprise” by Ministry of Science and Technology in 2001 and “National High-tech Enterprise”, “Zhenjiang Municipal Technology R&D Center” in 2009.


Now, the company has established long-term friendly cooperative relationships with Hudong, Jiangnan, Dalian, Guangchuan and Shanghai Waigaoqiao Shipbuilding companies, Jiangsu Rongsheng Heavy Industries, Nantong COSCO KHI Ship Engineering Co., Ltd., etc. The world famous Daewoo, Samsung, Hyundai, Nagasaki, Shimonoseki, Oshima, Imabari and Denmark Odense, and other shipbuilding factories are all important customers of the company. The mooring chains have been exported to America, Brazil, Southeast Asia, etc. The product appearance and quality meet customer expectations, winning praise from owners, contractors and insiders and raising the attention of designers, manufacturers and peers of marine mooring system engineering abroad.