The city branch of Micro, Small and Medium Enterprises Development Institute conducted a vendor development programme in association with NTPC Simhadri here on Tuesday. Manufacturers and traders, who attended the programme, were explained ‘dos and don’ts’ of ensuring good marketing. They were told about the procedures to be followed to supply items required by NTPC Simhadri by the company’s senior manager (purchase) Venkateswarachari. DIC General Manager L. Laxman and programme coordinator D.V.S.R. Murthy were present.