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Patent certificate
2018.08.21 a screw hoist with inverted gyro radial gate
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A kind of gyroscopic screw hoist on August 31, 2018
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2020.5.8 an inner hole positioning device new patent certificate
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On May 15, 2020, a kind of oil cylinder of water conservancy cleaning machine
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A new type patent certificate of hydraulic hoist cylinder on May 15, 2020
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2020.08.04 a new type patent for the docking tension device between engineering
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2020.8.14 a swing clamping device for test transport vehicle
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2020.8.14 a swing clamping device for test transport vehicle
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2020.9.8 a dirt removing device for piston rod of control brake oil cylinder
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