Nơi xuất xứ
Sichuan, China
surface treatment
heat treatment,silver coated
1.5 times hydraulic proof pressure test
no leakage
Dismantling and reassembly test
no leakage
vacuum test
less than 1*10-8mbar 1/s
thermal cycle test
no evidence of leakage
deep water submersion test
no helium detected
design
optional or according to your request