测试座材料
VESPEL
VESPEL
TORLON 4203
TORLON 4203
Peek Ceramics
Peek Ceramics
Peek
Peek
ESD420/  EKH SS11
ESD420/ EKH SS11
ULTEM 1000/2300
ULTEM 1000/2300
TORLON 5530
TORLON 5530