All documented delivery expenses incurred due to the repair or replacement of delivered parts, which have failed solely due to TEC’s fault, including cost of delivery to the Site, taxes, import duties and value added tax, if any, shall be borne by TEC. TEC shall be liable for all costs and expenses incurred by SKK in having such defects repaired or replaced by any third party, in case TEC fails again to commence to take action to make such repair or replacement within reasonable time. SKK shall give TEC estimated cost before carrying out such work. No any other event can SKK have any defect repaired or replaced by any third party without TEC’s approval, which shall not be unreasonably withheld.