http://172.19.1.196:8983/solr/secweb/select?q=group improve OR "group improve" OR "cluster Enhance" OR "cluster Upgrade" OR "set Enhance" OR "set Upgrade"&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=system_name%3ADerivative%20Warrant%20Prospectus&start=0&rows=10
each group of companies, an affiliate acting as the central
company is the one whichsets out policies and business directions for all
affiliates and associated companies within that group of companies