Hello! This is Jiangyin Zhongxin Machinery Equipment Co.,LTD. We have some star products,such as roots blower, aeration tube,aeration diffuser and so on. The equipments can improve your aquaculture efficiency and also widely used in sewage treatment, would you like to have a try? If you are interested in our products,you can visit our website and contact me to know more details. Looking forward to your reply,thanks!