http://172.19.1.196:8983/solr/secweb/select?q=PTT Constant OR "PTT Constant" OR "PTT Stable" OR "PTT consistent" OR "Petroleum Authority of Thailand Stable" OR "Petroleum Authority of Thailand consistent"&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
guidance on how these principles can be approached and may be delivered. While practice will vary in detail between national markets, the principles that underlie high standards are constant. Good practice