Factory production of the needle valve for hydraulic control valves & nbsp; supporting, but also can be used for supporting the same specifications, the specifications for 1 / 2 of the silk thread and a diameter of 10 of the copper pipe of the community. Only for the use of water and oil circulation, such as the use of other specific substances, it is recommended to contact me before buying. At the same time, the factory can also be customized according to customer requirements other hardware accessories. Please contact me: QQ:1007267708, Tel: 13216855732, Ms. chen.