Changes in bid conditions for privatisation of Chandigarh electricity distribution company, including allowing new bidders to submit bids after the last date, have irked the industry which has demanded immediate withdrawal of changed rules. The Association of Power Producers (APP), which represents almost all private sector power producers, has shot off a strongly worded letter to the administrator of the Union Territory of Chandigarh. It said bidders have already submitted bids, and amendments to rules at this stage vitiate the sanctity of the entire process and sets a bad precedent for the future.