use fpr 2000person ,21m high ,40m aroud

Helium Gas
High purity

The product is in good quality.

Oil casing pipe
1. Standard: API 5CT-0735
2. OD: 114.30 - 339.72 mm (4.5000 -13.375 in)
3. WT: 5.21 -13.06 mm (0.205 -0.514 i

1. Our company has passed API certification and
2. Specialized petroleum casing pipe
3. Size: 4 1/2" -13 3/8

1. Our company has passed API certification and
2. Specialized petroleum casing pipe
3. Size: 4 1/2" -13 3/8

multi-functional device integrating GSM fixed telephone and house alarm system.

multi-functional device integrating GSM fixed telephone and house alarm system.

multi-functional device integrating GSM fixed telephone and house alarm system.

multi-functional device integrating GSM fixed telephone and house alarm system.