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No. 19, East Qianjiang Road, Huaiyin Industrial Park, Huaian, Jiangsu, China (Mainland)
interchangeable spools throttle groove on spools manual hydraulic symbol for ball valve, US $ 20 - 100 / Set, Jiangsu, China, SJ, 722113.Source from Huaian Shengjie Hydraulic Machinery Co., Ltd. on Waimaotong.com.