14 January 2026 Dongjun Machinery signs a cooperation agreement with customers in the United Arab Emirates ... View Details
14 January 2026 Dongjun Machinery's ISO90001 quality management system has passed the re audit ... View Details
14 January 2026 Dongjun Machinery has been certified by the Municipal Enterprise Technology Center ... View Details
14 January 2026 Dongjun Machinery was awarded the title of "Jiangsu Private Science and Technology Enterprise" ... View Details
14 January 2026 Dongjun Machinery's mandrel-type valve seat puller has been granted a national patent. ... View Details
14 January 2026 Two products from Dongjun Machinery were awarded the title of Jiangsu Provincial High-tech Product. ... View Details
14 January 2026 Dongjun Machinery's API 6A and API 16C recertification audit passed. ... View Details
14 January 2026 Dongjun Machinery's Simple Gate Valve Pressure Testing Operating Platform Obtained National Patent ... View Details
14 January 2026 Dongjun Machinery's high-pressure flat gate valve obtains national patent ... View Details
14 January 2026 Dongjun Machinery has been recognized as a municipal-level high-tech enterprise, and two of its products have been awarded the title of municipal-level high-tech product. ... View Details
14 January 2026 Dongjun Machinery's metal-sealed mud valve has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's dual-well offshore wellhead device has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's high-pressure movable elbow has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's Vertical Cementing Manifold for Offshore Oil Production Obtains National Patent ... View Details
14 January 2026 Dongjun Machinery's orifice plate throttle valve has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's rotary metal-sealed valve has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's straight-through adjustable flow valve has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's straight-through manually adjustable flow valve has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's Marine Vertical Cementing Manifold Obtains National Patent ... View Details
14 January 2026 Dongjun Machinery's vertical cementing manifold has been granted a national patent. ... View Details
14 January 2026 Dongjun Machinery's bimetallic seal assembly has been granted a national patent. ... View Details
