http://www.mr-machining.com/Titanium seat post collar factory Our History Nanjing Morong Machinery Technology is located in Nanjing City, Jiangsu Province, China. We are one of the leading professional manufacturers and exporters of custom precision CNC machining parts, integrating design, prototyping, mass production, assembly, sale and service under one roof. Our Factory We have more than 2500 square meters production area totally. With more than 15 years' experience, we offer full rage of CNC Machining Service which contains CNC turning , CNC Milling, Grinding, Drilling, EDM Cutting, Laser Cutting, Polishing, etc.. Heat treatment