| 1. | 2 . industrial water tower serial products : countercurrent and crosscurrent series with steel - encased concrete structure , steel structure , wood structure , fiberglass reinforced plastics structure and rc structure 2工业水塔系列产品:逆流式和横流式系列,结构为钢砼结构钢结构木结构玻璃钢结构rc结构 |