Hi Ramzi I hope all is well. The PQS specs can be found at https://apps.who.int/immunization_standards/vaccine_quality/pqs_catalogue/catdocumentation.aspx?id_cat=17 There is a newer category since we last worked together - the RF01 specs are for mains powered appliances that have low mass (short holdover for areas where electricity is quite reliable). I do not think there are RF01 appliances that have been prequalified. The RF03 category covers "ice lined" appliances. the PQS product catalog is found at: https://apps.who.int/immunization_standards/vaccine_quality/pqs_catalogue/categorypage.aspx?id_cat=17 Take care and best wishes, Steve McCarney Director - Sunny Day LLC