Tianzhongzhonzhi Co., all our mills and service centers covered by one quality management system that is ISO 9001 certified. Quality means satisfying customers¡¯needs and expectations from product design to manufacturing up to delivery and related services.Quality encompasses all supply chain processes, including : from purchasing to product development, steel making, rolling and drawing technology, order processing, production planning, manufacturing, product controls, testing and qualification, storage, shipping, post-sales assistance.
