330 UNION WITH FLAT SEAT
310 BACKNUT
280 HEXAGON NIPPLE
Company: Qingdao Evergolden Flow Control Co., Ltd.
Phone number: (86)15953213563
E-mail: john@evergoldenflow.com evergolden@evergoldenflow.com evergolden_qd@yeah.net
Address: No.903, Chongqing middle Road, Qingdao, China