Luoyang Petrochemical's two patent applications were granted patents through the examination of the State Intellectual Property Office. These two patents are "an automatic low-pressure storage tank pressure relief device" and "a new type of crane tube loading system sealing device." Lubricant Additive Package,Engine Oil Additive,Hydraulic Oil Additive,Gear Oil Additive Liaoning Yeboon Lubricating Oil Manufacturing Co.,Ltd. , https://www.yblube.com
