技术支持中心
Technical support center
产品实验数据
Product test data合作钢厂认证文件
Documents of cooperative steel plant500+规格尺寸
500+ Specification and size
现货库存充足
Adequate spot inventory
合作钢厂30+家
More than 30 cooperative steel mills
全国仓储7处
Global warehousing 7 locations