now!

"Sizzle~~"

Shen Ting sprayed a small amount of etching reagent with his right hand.

Holding a high-brightness cold light source in his left hand, he shines it at an extremely oblique angle onto the etched window.

By observing changes in the brightness of light, one can determine the microscopic indentations caused by corrosion in metal.

When appropriate, press the spray bottle switch with your right hand to allow the etching solution to form a uniform and fine mist that continuously impacts the 304 stainless steel surface.

"Hiss hiss hiss..."

A slight, corrosive sound, different from that of liquid nitrogen, continued to ring out.

When the dark brown solution comes into contact with the silvery metal, the color at the point of contact immediately darkens.

The stainless steel surface is slightly "dissolving" at a speed visible to the naked eye.

As the solution flows down, it carries away extremely fine metal ions, leaving noticeable stains on the anti-corrosion pad below.

The entire mine was so quiet you could hear a pin drop.

All that remained was that faint, continuous hissing sound.

And the suppressed breathing of the four people.

Xu Xinyi even subconsciously held her breath.

Only when his chest felt tight did he take a deep breath of cold air.

Two bomb disposal police officers watched Shen Ting's actions intently, not daring to blink.

They were experts, and therefore understood even more the terrifying nature of Shen Ting's actions at this moment—

A steady arm that barely trembled.

Precise control of etching solution flow rate and angle.

And there's the amazing ability to determine the etching process simply by observing light reflection...

If Team Leader Shen were to say now that he had never defused a bomb before, they would find it completely unbelievable.

The actions taken by Team Leader Shen at this moment could only be performed by an exceptionally experienced bomb disposal expert.

Those were teachers they only had the opportunity to meet when they were away for training.

Time passed slowly!

Suddenly, Shen Ting stopped spraying the etching solution without warning.

Almost simultaneously, he put down the cold light source with his left hand and quickly grabbed another spray bottle containing a transparent solution next to him.

A colorless mist of water was sprayed onto the metal window that had just been soaked in the etching solution.

"laugh……"

There was another soft sound, but this time, it was accompanied by a barely audible hissing sound, like a bubble bursting.

A fainter wisp of white vapor escaped from the air.

This is an alkaline neutralizer used to immediately neutralize the residual strong acid mixture of ferric chloride, hydrochloric acid, and nitric acid after etching has stopped.

To prevent residual acid from continuing to corrode downwards and damage the insulation layer.

Shen Ting's operation was fast, accurate, and steady.

The amount and timing of the neutralizing agent spraying were just right.

The acid-base neutralization reaction is just completed, and the etching solution is completely neutralized and becomes ineffective at the very moment.

The outermost layer of stainless steel was completely etched, exposing the central insulating layer.

Two bomb disposal police officers simultaneously leaned close and examined the object closely with magnifying glasses.

All that could be seen was the originally smooth and flat stainless steel casing.

A neat, square notch, about the size of a little fingernail, appeared!

The depth of the notch is extremely uniform, just enough to completely erode through the less than two-millimeter-thick stainless steel outer layer.

This revealed a layer of dark gray, amorphous, dense material underneath.

The middle insulating layer of the sandwich shell!

Moreover, the insulation layer was completely intact!

The surface is smooth and appears completely unaffected by the strong acid etching solution above.

"It's done..."

Zhao Gang, a bomb disposal expert with a flat-top, uttered two words in a dry voice.

There was a clear sense of shock in his voice.

Chen Hao let out a long sigh of relief, only then realizing that the lining of his bomb suit on his back was completely soaked, clinging to his skin and feeling icy cold.

He looked again at Shen Ting's calm profile, his eyes filled with amazement.

This technique, this control, this calm mindset—it's even more impressive than the best bomb disposal experts he's ever met.

Xu Xinyi, who had been responsible for maintaining the liquid nitrogen spraying, only dared to breathe deeply at this moment.

The gazes directed at Shen Ting were filled with surprise and astonishment.

She hadn't expected that Shen Ting was so skilled at handling bombs.

Shen Ting himself, however, seemed to have done only a trivial matter.

He put down the neutralizer spray bottle and picked up a piece of specially made lint-free microfiber cloth.

Carefully clean any remaining neutral salt crystals that may remain along the edges of the etched window.

At the same time, the next instruction was given, and the voice remained steady:

"Clean the etched window."

Be careful to move gently and avoid generating static electricity or vibration.

"Zhao Gang, prepare the insulating gel."

After cleaning, the stainless steel sections along the edges of the etched window were immediately double-wrapped and sealed to ensure absolute insulation.

Prevents any possible accumulation of trace amounts of charge or intrusion of external moisture.

"no problem!"

Zhao Gang took out the insulating gel and immediately began the sealing process.

He quickly stopped what he was doing and looked at Shen Ting:

"Team Leader Shen, the lockdown is complete."

Shen Ting leaned down, his gaze sweeping over the etched window sealed with insulating gel.

A pale yellow, slightly elastic gel was evenly applied to the edges of the stainless steel casing.

This forms a perfect sealing ring, tightly wrapping the metal cross-section.

"It's sealed very well."

Shen Ting nodded, and Zhao Gang's tense expression finally relaxed.

"Prepare the ceramic drill bit."

Shen Ting reached out his hand, his gaze still fixed on the small etched window.

Armed Police officer Chen Hao, who was split up, quickly took out a piece of equipment from a specially made toolbox.

It is much smaller than a regular hand drill, with a streamlined, matte black casing and a specially made diamond-coated ceramic drill bit at the front.

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