ACT may grant exception of the conversion period if the field has been practiced according to the principle of ACT Organic Agriculture Standards for several years. Such cases have to be verified through any evidences submitted to ACT, e.g. input records,crop production records, statements from non-conflict of interest organizations indicating that no chemicals has been used for a long time and the soil has been improved naturally, articles in independent publications, etc. ACT will verify such evidence and do evaluation during field inspection and reserve the right to consider case by case.