THOMASI adopts a strict control in each one of its manufacturing process stages, from storage of trunks to be plated up to dimensional and visual conformance checking of its products. It makes use of state-of-the-art automated equipment, such as MINAMI "joiners" that guarantee that the activities related to "plate joining" take place with no defects, avoiding formation of "gaps" inside and at board sides. Equipment such as the calibrator sander enables to control maximum variation of 0.5 millimeters among boards.

Gluing process of plywood boards uses resins from supplies certified by ISO 9001. THOMASI control laboratory tests all received products such as to assert gluing stability property of plywood boards and wooden panels according to its internal standards.