... No., barcode, 2 -D code, etc. on metal or nonmetal surface (plastic, silicon or porcelain, etc.) ... and environment-friendly. 4. Its mainly equipped with the international advanced semiconductor light-emitting diode. diode ... reflect lens, Q-switch, Q-driver and other key parts imported from USA,UK, Singapore etc. · ... parts, telecommunications products, plastic buttons etc. Metal marking machine with CE