1. Material: PC base + tin alloy support + strong adhesive 2. Surface treatment of zinc alloy base: electroplating (electroplating pearl) 3. Tin alloy support, fully polished and electroplated 4. Tin alloy support, adjustable at 90 degrees, 5. Different from ordinary ring brackets, the phone can be placed flat on the desktop without shaking Tip: This product can only be folded at 90°, not 360°rotated