China Petroleum & Chemical Corporation

Research Institute of Petroleum Processing, Sinopec

Beijing Autonavi Yunmap Technology Co., Ltd.

Xinhua Li

Han Zhou

Guang Yang

Jun Long

Yi Zhao

Qinghua Duan

Yonghao Zhang

Zhiqiang Wu

Shuo Su

Xiaoguang Zhao

Shaohang Yang

Yao Tong

Linya Zhou

Online ride-hailing and invoice issuing methods, systems and apparatuses are provided. An example method comprises: receiving a first ride-hailing request from a user terminal, wherein the first ride-hailing request includes one or more transport capacity types, one or more online ride-hailing service providers providing the corresponding one or more transport capacity types, a start location and a destination location; sending one or more second ride-hailing requests to one or more online ride-hailing service platforms corresponding to the one or more online ride-hailing service providers according to the one or more transport capacity types and the one or more online ride-hailing service providers; receiving one or more second ride-hailing response messages returned by one or more of the one or more online ride-hailing service platforms; and returning a first ride-hailing message to the user terminal based on the second one or more ride-hailing response messages.

Online ride-hailing and invoice issuing method, system and apparatus

This invention relates to a novel hindered phenol compound of Formula (I) (wherein the groups R and R' are as defined in the specification), preparation thereof and use thereof as an antioxidant. By using the hindered phenol compound of this invention as an antioxidant, it is possible to produce a lubricant oil composition exhibiting excellent oxidation resistance at elevated temperatures. 

Hindered phenol compound, preparation thereof and use thereof as an antioxidant

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Beijing, China

Xinhua Li