Tender For corrigendum : providing of repair and overhauling service - repair of hammer ball pen 1lb; repair of hammer ball pen 1lb; yes; buyer premises,repair and overhauling service - repair of machine drilling electrical type h(230-250v); repair of machine drilling electrical type h(230-250v); yes; buyer premises,repair and overhauling service - repair of high power search light; repair of high power search light; yes; buyer premises,repair and overhauling service - repair of drilling machine elect; repair of drilling machine elect; yes; buyer premises