manufacturing or commercial secret "manufacturing or commercial secret" means highly sensitive information relating to- (a) any manufacturing process; (b) any product , raw material, by-product formulation; (c) any idea of duplication or cloning of product; or (d) any technical information on operating system, and that the information has been declared as manufacturing or commercial secret in writing by the occupier or owner; [Ins. Act A1268] ACT 139 - FACTORIES AND MACHINERY ACT 1967 (REVISED 1974) 3. Interpretation - general.