1. Patents: Taiwan, U.S.A., Germany, France, Italy, Mainlan China, Japan, Israel, and etc.
2. The pins are anti-drilling.
3. Supply blank key to provide after service and it is easy to copy the key.
4. It can be used in all locks require for high security.
1. The construction of the cylinder is two cross lines with 5 pins and 4 pins and the shape of pins are special design. It is high security and anti-theft. 2. The material of key is cupronickel. The strength and wearing-resisting are 3 times than bronze.