Greenmax has been one of the leading brands for oats, grains and nuts, breakfast cereals in Taiwan for more than 50 years. The manufacturer, Mayushan Foods Co. Ltd, sees the food industry as a good-will industry; hence, the company gives much importance to quality. The company has a Quality Control department that examines all raw materials before production to ensure that their ingredients are devoid of any contaminants, toxins, pesticide residue, bleach and artificial elements. Greenmax boasts its non-GMO and gluten-free ingredients with their consistently maintained TLC Clean Label.

The company maintains excellent facilities, manufacturing procedures and well-trained personnel which conform to HACCP and ISO standards. There is total assurance that all products are hygienic and safe. The facility is certified by HACCP, ISO9001, ISO22000, ISO14001, and OHSAS 18001.