http://172.19.1.196:8983/solr/secweb/select?q=PTT Research OR "PTT Research" OR "PTT Study" OR "PTT Investigation" OR "Petroleum Authority of Thailand Study" OR "Petroleum Authority of Thailand Investigation"&wt=json&indent=true&facet=true&facet.field=key_filetype&facet.field=key_sitemap&facet.field=system_name&facet.field=key_keywords&hl=on&hl.fragsize=200&hl.fl=id,title_th,searchcontent_th&defType=edismax&qf=searchcontent_th&qf=id&qf=title_th^1000000&pf=title_th~5^1&pf=searchcontent_th~5^10000&ps=2&mm=100&qf=title_th_default&fq=key_sitemap%3Ainvestor&start=0&rows=10
may also be appointed by the collective investment vehicle to assist with execution of the mandate, for example, through the appointment of research, advisory or vote execution services and in some