Sujing rely on speciality research and develop and make experience on a large scale , rely on all parts of the country influential every large long-term cooperation of designing institute one one year only, focus energy on the key part of the project of angry station. Offer the large-scale nitrogen hydrogen which is handed in the key to user and protect the angry project of standing. Apply to four major production lines extensively. (1. Hot zinc-plated production line 2 of continuous belted steel . The production line of cold-rolled belted steel is 3. The copper is taken, the copper is in charge of production line 4. Production line of powder metallurgy)