•具有密封防漏功能，确保每秒钟的泄漏量只有1×10-12标准立方厘米的氦气leak proof seal, to guarantee the leak volume of 1х10-12 cm3 helium per second. •最长的产品生命周期（标准为一百万个周期＋）the longest product life cycle (the standard is one million cycle +) •能够容忍极端的温度 can tolerate extreme temperature •低出气率 low gas efficiency •具有抗腐蚀能力 the capacity of corrosion resistance
