http://172.19.1.196:8983/solr/secweb/select?q=improve GROUP OR "improve group" OR "Enhance cluster" OR "Enhance collection" OR "Upgrade cluster" OR "Upgrade collection"&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%3ADebenture%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