what advantage of our esd smock?

Our esd smock is not a widely recognized textile type, but if you are referring to a specific performance fabric, it likely has specialized properties. Could you clarify if "our esd factory Fabric" is a brand, a military-grade textile, or an industrial material?

However, if it's a high-performance or workwear fabric, possible advantages might include:

Durability – Resistant to wear and tear.
Breathability – Allows airflow for comfort.
Moisture-wicking – Helps keep the wearer dry.
Flame resistance – If designed for safety applications.
Lightweight & Flexible – Provides comfort and ease of movement.

Short Sleeve ESD Jacket/ V-Neck /Lightweight /cotton Fabric,

Groundable static control garment system.
Allows operators and smock to be bonded or electrically connected to ground to prevent ESD events in ESD Protected Areas. 2% conductive carbon fiber woven in chain-link design.
Provides continuous and consistent charge dissipation throughout lifetime of smock.
Creates Faraday cage effect around operator.
Shields ESD charges from operators' clothing from damaging ESD sensitive devices.
Panel to panel conductivity.
Prevents isolated charged conductor in ESD Protected Area.

1)   35% cotton+63% polyester+2% conductive fiber
2)   Yarn: 100D*100D
3)   Gram weight: 125g
4)   Wrap density: 68/cm
5)   Colors available: white, green, light blue, royal blue, light grey and etc
6)   Surface resistance: 10e6-10e8 Ohm or 10e7-10e9 Ohm
7)   Permeability to air: 75cm3/cn2/sec
8)   Static voltage: 23v
9)   Friction voltage: 110v
10)   Electrified capacity: 0.35μC/m2
11)   Static decay: <0.4s
12)   Durability: 50 washings
13)   Customization is available

Machine washable up to 90℃
Do not bleach
Do not use acid or alkali
Ironing at Medium temperature
Tumble dry at low temperature

Package:

● Pcs/ctn: 50 (M)
● G.W./Ctn (Kgs): 19
● Meas. (mm): 300*470*540
● Volume (CBM):0.08