Features:
1. Upgraded endurance, durable, strong power;
2. Corrosion-resistant steel surface, using high-quality poor-thickness steel shell, the steel surface is hard and not easy to be damaged, corrosion-resistant and explosion-proof;
3. Anti-leakage sealing ring, new type sealing ring technology, double -leakage prevention, more peace of mind to use;
4. It does not contain mercury or cadmium and is environmentally friendly.