Panda Criminal Investigation Team

Yu Renjie looked up at the green machine in the corner,

Imagine it in action.When the fire burns inside,

It is a true melting pot.

"Walk,

Let me introduce you. "Cheng Bin patted his buttocks and stood up,

After Yu Renjie got up,

He also enthusiastically patted his ass.

“I bought this machine last March,

Imported equipment,

It is worth more than 20 yuan and can automatically set the incineration time and temperature.Its maximum heating temperature is seven hundred degrees, but it can't actually reach it. Cheng Bin stopped: "Maybe it is more appropriate to find a professional person to talk about it." "

"fine,

Go ahead and save some time. " Yu Renjie said.

So Cheng Bin continued: "They bought this machine to clean the abrasives. Different molds are used in the production of plastic particles. I won't explain this much. The same production line will produce different molds in turn. Plastic particles,

Their techniques are similar,

It's just that the raw materials and heating temperature are different.When replacing products in the production line, in order to prevent two different particles from interacting with each other,

Workers will use the waste of the latter particle to pass through the machine first,

wash out the old stuff,

Reproduction of new materials.Can you still understand after talking about this? "

Yu Renjie nodded: "No problem,

You made it very clear. "

"But the mold is not easy to clean,

There are seams inside,

And dead ends.Plastic is easy to stick to it after heating. Some materials are so viscous and hard that they cannot be scraped off with a knife.

had to be heated at high temperature,

Let it liquefy so the waste can be removed. "

"Understood, so put the mold in the incinerator, after heating, the plastic softens into water, the water drips down, and the mold is clean."

"It's like this. The engineer set the heating route in advance, heating at 200 degrees for 2 hours, then heating to 600 degrees, keeping it constant for 4 hours, and finally returning to 200 degrees for 2 hours, which is considered a cycle."

"Why is it set up like this?"

When Cheng Bin was questioned, he said frankly, "I don't know."

"Probably to save energy consumption." Yu Renjie guessed: "When the temperature in the furnace reaches 200 degrees, the heat already generated inside can help the combustion, and it is easier to burn to 600 degrees."

Cheng Bin likes how he looks very knowledgeable despite knowing nothing: "It's not important, what matters is the later discovery."

"Don't be a fool, just tell me." Yu Renjie covered his stomach and said, "I'm so hungry that my chest is pressed against my back, and my belly is sunken."

Cheng Bin pressed his palm on his stomach: "It's okay, the meat is still there." After that, his hand never left, and he even rubbed his stomach for him.

"I asked the worker how often they wash the abrasives, or how often they change the product. The man said that he didn't know the specific arrangement, but he washed it almost every night, but it wasn't necessarily the Molds on the same production line. Usually, the people on the day shift send the molds to the incinerator before leaving work, and then the people on the night shift take them out. I found the production manager and asked him to investigate who Yingying disappeared the night Responsible for cleaning the mold."

"Are some of Yang Shuanglin's colleagues?" Yu Renjie asked eagerly.

"No, the registered name is not theirs. You have to listen carefully. As I said, it is the workers on the day shift who bring the molds to the furnace." Cheng Bin feels very proud when he can occasionally point out Yu Renjie's mistakes.

"I didn't mean the ones who delivered the molds. What I said was whether they were the ones who took the molds." Yu Renjie corrected.

"Of course they are not registered on the schedule. They are temporary shifts, remember."

"I mean, are they actually doing the operation."

"Yes." Cheng Bin was a little annoyed: "You can't let me finish talking first!"

After reading the duty list handed over by the production manager, Cheng Bin asked him to find the employee responsible for cleaning the abrasive tools.His luck was very good, the people who worked on the evening shift on May 5 happened to be assigned to the night shift on this day.The worker who cleaned the mold that day told him that it was Katsuragi who took on the job for him.

I don't know what happened that day, Xi Chunbin scolded Katsuragi a few words, and then proposed to punish him to fetch the abrasive tools.Anyway, no one is willing to do this job, it is bitter and hot, so no one stops it.On the contrary, the worker was still very happy in his heart, thinking that he had escaped a catastrophe.But this is obviously very abnormal, especially when this matter is viewed together with their temporary shift decision.

"If the corpse is thrown into the incinerator, they must turn on the furnace by themselves, in case the corpse is not finished." Yu Renjie forgot his hungry belly, looked deeply at the green machine in front of him, and entered the furnace. god.

"I think the body may not be completely burnt." Cheng Bin said: "While waiting for you here, I checked on the Internet, 600 degrees can only burn human muscles, organs and blood, and burn human bones." As far as possible, the temperature has to reach at least 800 to 900 degrees."

"What is the maximum heating temperature of this machine?"

"Look, let me tell you that you didn't listen well! The maximum temperature is 700 degrees, but in fact it can't reach it, it can only reach about 650 degrees. 700 degrees is the extreme case."

"But burning for a long time, is it possible that the bones have been destroyed? Even if there are still some broken bones left, the DNA cannot be detected."

"I don't know about this, I have to go back and ask the forensic doctor."

"Where are the workers on the day shift on May 5rd, did they put the mold in the furnace, or did Katsuragi and the others make it? If the total heating time is 23 hours, it would be too late for the evening shift to complete this operation. Let me explain something first, I It doesn’t mean who is registered, but the person who actually operates.”

"This, I forgot to mention just now. I have called the people on the day shift in the morning to ask, and they did put the mold in, around 06:30."

"Oh, then Katsuragi and the others passed by during the 15-minute break."

"You pig brain, don't you still have Yang Shuanglin and Hu Yong!"

Only then did Yu Renjie think of Yang and Hu who went to the factory to work overtime to repair the machine: "I probably fainted from hunger."

"You are hungry and stupid!" Cheng Bin laughed: "I continued to say that the heating program of the incinerator is pre-set, and it needs to be connected to the Internet to modify it, and once the program is modified, a record will be left. So they did not There is no way to modify the heating route, only to suspend the process, and then restart the process after throwing the body. But these basic operations cannot be completed by workers, because the panels are in English, which is quite complicated.”

There is indeed a control panel on one side of the incinerator, and in addition to the touch screen, there are several buttons on it.Yu Renjie had never been talented in automation equipment, so he could only scratch his nose in embarrassment at this moment.

"The pause button is the red button," Cheng Bin said, pointing to the panel, "but if you press it directly, it will trigger the alarm. This is the emergency stop button that is activated in case of emergency, and it is the only button that workers know. "

"You mean, there are other ways to pause the machine?"

"Yes, through the control panel, it takes four or five steps to complete the operation. These ordinary workers have not been trained, only engineers know."

"Yang Shuanglin and Hu Yong are both engineers."

"Yo, your IQ is back." Cheng Bin smiled at him: "I guess they paused the machine, threw the corpse in and restarted it. But until the temperature reached 600 degrees, there was no obvious damage to the furnace from the outside. They didn’t dare to leave until they saw foreign objects. They left around 11:600, and the machine should have been at [-] degrees for more than two hours by then.”

"I never found out that you are so smart!" Yu Renjie said, "But I have a question, if the body is not burned, what about the remaining body?"

"This is a very good question, Comrade Xiaoyu." Cheng Bin looked a little proud: "The workers here told me that every time after washing the mold, the waste from cleaning will be thrown into the hazardous waste bin. At the beginning of each month, the dangerous The waste will be recycled by the hazardous waste treatment company in the park.”

He pointed to an inconspicuous blue plastic bucket in the corner with a white lid on it: "I think, if the body is basically burned, even if there are some scraps left, it will be difficult to be found among the waste This is the reason why he only panicked for a while when he saw the blue light at Yang Shuanglin's house last time, when the waste bin had already been taken away. Later, he became more confident, because he knew very well where the waste would go. "

"Where will it go?" Yu Renjie asked cooperatively.

"Landfill." Cheng Bin said.

There are several methods of waste disposal, such as recycling, landfill and incineration. Among them, hazardous waste generated by industrial production is often selected for landfill due to its toxicity.Yu Renjie had seen a similar site in the news. At that time, the news was criticizing the poor management of the landfill in a certain place, and the atmosphere was smoky.He remembered the vastness of the landfill, and the splendor of the waste being crushed into a single black cake.Looking at the dark land, people will feel a sense of despair, as if they have seen the end of human beings.

In regular landfills, several layers of protective measures are added to the waste to isolate water and air and avoid polluting the environment.To find the barrel of human detritus in such a venue is tantamount to finding a needle in a haystack.

"If what you said is correct, it would be considered a perfect crime." Yu Renjie said weakly: "When people from the recycling company dump the waste, they will never find other things mixed in. There is no corpse, and even Whether Yingying is still alive cannot be determined."

Cheng Bin shook his head: "Actually, there is still a glimmer of hope. I called the hazardous waste treatment company in the park just now, and the person who answered the phone told me that he would verify the relevant information and let me wait for the news."

"Probably just perfunctory you, I will give you bad news soon." Yu Renjie said: "After all, more than two months have passed, and the barrel of waste should be disposed of anyway." He suddenly felt very depressed and left Yingying It has been so long since his disappearance, and they have just discovered some clues, but any evidence may no longer exist.

"I don't think so. Although the person who answered the phone was very young and prone to over-commitment, he left for a while, and he heard the voice to ask his superiors. When he came back, he said to let me wait, I think There may be some hope. There is only one company in the entire park, which is a state-owned enterprise, and it is common for them to be inefficient. Maybe that bucket of waste hasn’t been sent to the landfill yet.” Cheng Bin Pushing the door of the workshop: "Anyway, we have to wait, let's find something to eat first."

"When I came here, I found a shop selling flatbread and fried dough sticks on the road!" Yu Renjie followed up, but stopped after walking a few steps: "What you said is indeed possible, if the barrel of waste has not been disposed of , now is a particularly critical time.”

Yu Renjie didn't explain much, but took out his mobile phone and made a call.From his demeanor and tone when he called, Cheng Bin guessed that he was talking to an elder, and sure enough, he heard him call grandpa into the microphone after a while.

Yu Renjie's grandfather is well-known in the police circle. Not only did he solve several earth-shattering cases, but he also served as the deputy director in the last few years of his tenure.When Cheng Bin went to Yu Renjie's house from a young age, he was not afraid of anything, except his grandfather.The eyes of the old man are like an X-ray machine. Even if you have not violated the law, as long as you have cheated in the exam, you will feel guilty when you look into his eyes.

Cheng Bin couldn't help but began to worry about his future with Yu Renjie, now that he finally got his wish to be with him, with such a good thing, how dare he see his grandfather again.

When the salty soy milk came up, Yu Renjie just hung up the phone.Cheng Bin was inexplicably nervous, and wanted to ask him if he was mentioned in the conversation just now.Yu Renjie took a sip of soy milk and raised his head: "I asked my grandfather to help me just now."

"How do you say it?" Cheng Bin handed him the fritters.

"The hazardous waste treatment company said on the phone that they need to wait for news. There are two possibilities. The first is to verify that the information is false, and the things have been disposed of long ago, but in order to show sincerity, they have to put on a show. The second is, Even they themselves feel that it is possible that the pile of waste is still in the park, but they are hesitating whether to speak out."

Cheng Bin shrugged his shoulders: "Does it need to be so complicated?"

"I become stupid when I am hungry, but you become stupid when you are full." Yu Renjie said: "When did the people of the state-owned enterprise go straight to work? Once we find that the waste recycled in early June is still in the park, we can get evidence. But they have to admit that delays in work are not good for them. But if they pretend to lie to us and say that things have been processed, they will not be able to account for it if we find out. So they have to get rid of this pile immediately. Dispose of it to avoid future troubles, or find a better reason to explain why this pile of waste has been piled up in their park for so long. This will require you to wait, they are going to a meeting to discuss."

"It makes sense to say that, but it's unnecessary." Cheng Bin criticized.

"You don't care about them." Yu Renjie bit the fried dough stick and dipped his mouth full of oil: "Although it may not be useful, I still asked my grandfather to help me find out. He knows a lot of people. If he can find an acquaintance, he can help us talk Say a good word and give us that trash can."

Cheng Bin laughed: "I almost forgot that you were also a great relationship family since you were a child."

"You don't care about me!" Yu Renjie said, grabbing the rice balls in his bowl.