When most people mention precious metals, they first think of gold and silver, but there are actually many metals that are more expensive than gold. The value of metals depends on their rarity, extraction difficulty, characteristics, and market demand.

Key alloy wire refers to high-purity gold alloy wire with a purity of 99.99% and a wire diameter of 18-50 μ m. Usually, ball welding wedge welding is used for bonding and is commonly used for plastic resin packaging.