http://172.19.1.196:8983/solr/secweb/select?q=challenge Grouping OR "challenge Grouping" OR "challenge PTT" OR "challenge Petroleum Authority of Thailand" OR "obstacle PTT" OR "obstacle Petroleum Authority of Thailand"&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
cases representation to companies on behalf of the governing body. In order to gain full value from this process, governing bodies need actively to oversee it and to have relevant skills to challenge and