I am Yinuo brand ductile iron grooved coupling and fitting manufacturer,in order to develop the oversea market,we are seeking the agents of our products 1) Super quality and competitive price 2) Heavy type and general type coupling and fitting 3) Ductile iron ASTM 536 GRADE 65-45-12 4) Finish: Paint epoxy powder and so on. 5) Color: Red 6) Rated working pressuer:300psi(2.07Mpa). 7) Following the standard of GB5135, ANSI, JIS, DIN Show More