Hướng dẫn cơ bản về ống mạ kẽm và ống đen: Ứng dụng và sự khác biệt
Xin chào, this is MAX the sales manager from TYTSTEEL, I have been in the steel pipe sales industry for ten years With a very rich product knowledge base and export experience, recently a customer asked How to tell the difference between galvanized pipe and black pipe and their respective uses.