Butterfly valve, is a simple structure of the control valve, can be used for the low pressure pipeline medium switch control of butterfly valve is to close the disc, rotating around the valve shaft to achieve the opening and closing of a valve.This is the second time this customer has placed an order in our company, and there has been related cooperation before, so this cooperation is progressing very smoothly. Customers have a deeper understanding of our company,coupled with our valves：Quality first, service first, integrity and responsibility;Loyal to the goal, efficient execution, trust and cooperation therefore, our cooperation will be smoother!