Qingzhou Haorun Machinery Co., Ltd. ye tɔ̈u Qingzhou City, Shandong Province, Shandong Peninsula Central, Jiaojii Railway and Shealing Railway, Jiqing Highway and Changshen Highway ye tɔ̈u Qingzhou, 309 National Road, 227 Provincial Road, etc. ye tɔ̈u Qingzhou. A looi në 1998, a leŋ 20 000 m2, a tɔ̈u luɔi 187, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi, a tɔ̈u luɔi. The company has rich machining and hydraulic parts manufacturing experience, long term cooperation with industry research institutes, manufacturers and other engineering technicians, industrial research and research combined, digestive absorption technology, continuously independent innovation and R&D, carefully poured into manufacturing 'Haorun' brand three major types of hydraulic valve products: engineering machinery hydraulic valve category: including ZDF series integral multi-way valve, DL series split-type multi-way valve, XDF type leading control valve, 2WF type two-position distribution valve and other hydraulic valve products. Tractor hydraulic valve class: includes DF series split-type multi-way valve, FP-L15E distributor, ZD-L12 series integral multi-way valve. ..