getCSRRating            get CSR rating from a website
getCSRRating_unit       get CSR rating from a website for a unit page
getExchange             get a company's listed location
getHisMktCap            get a company's historical market cap, data
                        comes from NetEase
getHisMktCap_unit       get a company's historical market cap, data
                        comes from NetEase
getIndex                get a company's market cap, data comes from
                        NetEase
getIndexConstnt         get a company's market cap, data comes from
                        NetEase
getIndexData            get index information Currently include CSI
                        100, SSE 50, CSI 300, SSE Central SOEs 50, HSI,
                        HSCEI
getPPPList              get PPP list from an official website
getPPPList_unit         get PPP list from a single page
getProxy                Get proxy pool from free proxy provider
getTickers              get ticker by input a company's full name or a
                        list of companies' full name
getTickers_unit         get ticker by input a company's full name
getWaterQ_MEP_all       get PPP list from a single page
getWaterQ_MEP_all_unit
                        get PPP list from a single page
