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② perforación directa. Los agujeros también se pueden perforar directamente usando ejercicios de vidrio especializados con diferentes diámetros, pero es importante enfriarlos con agua durante el proceso de perforación.
Si desea saber más sobre nuestros productos, visite nuestro sitio web https://www.china-drill-bit.com . Espero cooperar contigo.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.