Corporate Patents_Dongguan Yixin Qingjiang Machinery Manufacturing Co., Ltd.

201410479592X_A Universal Operating Method for High-Strength Bolts Used in Tower Cranes to Achieve a Specified Preload Torque_Invention Certificate

PA21127778CN-Excellent-202210063500.4-Invention Patent Certificate (Seal)

PA21127779CN-Excellent-202210061597.5-Invention Patent Certificate (Seal)

201922066045X_Standard Pitch of a Replaceable Motor Gear_Utility Model Patent Certificate (Seal)

202120243307X_A 360-Degree Panoramic Safety Tower Crane_Utility Model Patent Certificate (Seal)

202121219736X_Combo Tooling for Boom Welding_Utility Model Patent Certificate (Seal)

202223085379X_A Trolley Travel Calibration Indicator Light Device for Tower Cranes_Utility Model Patent Certificate

202223207543X_A Load Switch Box for Construction Elevators—Utility Model Patent Certificate

2016208356061_A Roller System for Construction Elevator Cage Installation That Eliminates the Need for Commissioning—Utility Model Certificate

2019220660445_A Rotatable External Cage Door Welding Fixture_Utility Model Patent Certificate (Seal)

2019220675811_A Cable Installation Device for Construction Elevators_Utility Model Patent Certificate (Seal)

2019220675845_A Rotatable Front Door Frame Welding Fixture_Utility Model Patent Certificate (Seal)

2020231331957_A Cable Trolley_Utility Model Patent Certificate (Seal)

2020231456011_A Rotatable Welding Chassis Fixture—Utility Model Patent Certificate (Seal)

2021202153100_A Steel Plate Storage Rack_Utility Model Patent Certificate (Seal)

2021202433065_A Cable Wire-Selecting Rack_Utility Model Patent Certificate (Seal)

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Dongguan Yixin Qingjiang Machinery Manufacturing Co., Ltd.

Phone:13926893097
Address: Fengchong Industrial Zone, Fengchong Village, Zhongtang Town, Dongguan City, Guangdong Province

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