[News] The distinction between badges and medals 2023-07-21
How should the badge's surface be handled?A metal lapel pin that needs special surface preparation is being produced. 1. Mechanical polishing: Using a 2.2-4 kW polishing machine and a 300–350 motor speed of 2000–3000 rpm for the cloth wheel, the leather is mechanically polished. 2. Alkali treatment
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