**Brief Introduction**
SDZ16 weather‑resistant‑shell rectangular folding lock upgrades lock‑segment bumper‑jacket material with UV‑stabilized modified engineering‑plastic compound. Many folding‑lock outer jackets degrade, crack and peel under continuous outdoor sun‑rain exposure, exposing bare metal segments prone to frame‑scratching and rusting. SDZ16 improves jacket formulation to retard outdoor brittling‑aging and preserve intact cosmetic lifespan. Alloy‑steel lock‑blades, key‑operation and frame‑mount bracket are standard. Perfect for overseas markets with high‑frequency open‑air parking.

**Material & Craftsmanship**
Quenched alloy‑steel lock‑blades. UV‑stabilized anti‑aging modified‑engineering‑plastic bumper shell resisting sun‑rain‑triggered cracking. Reinforced hinge rivets. Copper key cylinder. Frame‑mount bracket included.

**Key Features**

1. Upgraded anti‑aging modified bumper shell provides UV‑resistance to prevent brittling‑peeling in open‑air environments.
2. Alloy‑steel lock‑blades deliver solid anti‑cut anti‑theft capability.
3. Stable‑performing key‑operated mechanical structure.
4. Compact folded footprint with frame‑mount bracket for on‑bike carrying.
5. OEM‑ready for custom shell colors, laser‑engraved logos and color‑box packaging.

**Application Scenarios**
Bicycles and e‑bikes for urban commuting scenarios with frequent open‑air parking.

**OEM & ODM Service**
Custom laser‑engraved logos, shell colors and packaging. Optimized for tropical and high‑rainfall‑region overseas orders.