Limax Electronics Co., Ltd.

Asustek Computer Inc.

Min-Hua Lin

William H Chu

William H K Chu

Hsin-An Shu

Jui-Huang Weng

The disclosure provides a surface treatment method which is suitable for a metal substrate. The metal substrate has an appearance surface. The surface treatment method comprises the following steps: first, applying surface sandblasting treatment to an appearance surface to form a sandblasted surface; subsequently, applying micro-arc oxidation treatment to the sandblasted surface in combination with an electrolytic solution to form a micro-arc oxidized surface; and then forming a coating to cover the micro-arc oxidized surface; wherein, the components of the electrolytic solution comprise sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylenediaminetetraacetic acid (NaEDTA) and sodium tetraborate.

Surface treatment method

Clock with movable advertisement signs

Alarm with perpetual calendar suitable for traveler

Calculator

Alarm with perpetual calendar for traveler

Electronic notebook

Calculator with perpetual calendar

Electronic notebook suitable for traveler

Calculator with perpetual calendar suitable for traveler

Desk calculator with perpetual calendar

Growing community of inventors

Taipei, Taiwan

Min-Hua Lin