... INTRODUCTION: ITEMStainless Steel Sections-channelBRANDBAOSTEEL, JISCO, TISCO, etc.MATERIAL200 SERIES and 300 SERIESSTANDARDGB, AISI, ASTM, ASME, EN, BS, DIN, ... packages for easy identification of the product I. D. and quality information.After service1. One-year follow:We’ll ... ACADEMY: a great and famous academy existed over 1000 years. You can see the ancient education and culture of China here.