Kuala Lampur, Oct. 10 -- KUALA LUMPUR, Oct 10 - Oil blending activities must obtain written approval from the Customs director-general where required under the relevant regulations, and be backed by complete documentation to ensure legal compliance and transparent transactions, an expert said.

Maritime, Customs and cross-border trade policy and law expert Madzli Harun said every activity involving the import, storage, blending and re-export of oil must be carried out within the scope of the licence and the conditions set by the authorities.

He said blending could alter a product's composition and specifications, so clear records were needed to verify quantities, cargo movements and the condition of the product before and after the proce...