Li Weidong's sentence "You have been cheated by Sakurada Co., Ltd." instantly cleared Huang Aihua's brain, and the alcohol that he originally drank seemed to have all volatilized at this moment.

"Got caught, Mr. Li, you have to make it clear. Huang Aihua said.

Li Weidong didn't panic, and explained: "Let's talk about the protective sleeve of this piston rod first! It is not enough to use rubber materials alone, a layer of nylon leather fabric must be added to the outside, and it must be the kind without trachoma, nylon leather can be dustproof, waterproof, oil-proof, and chemical-proof, and rubber mainly has a sealing effect.

Speaking of sealing, but also in the protective sleeve to add a ring of steel travel, used as a support, without this layer of steel travel, the protective ring is not durable, especially in the mine, it is easy to damage, this thing needs to be customized according to the situation of the equipment, a single rubber products factory can not be processed, you have to find that kind of large petrochemical plant, in order to make qualified products. ”

"Large petrochemical plant, this is easy, you can find Shengli Oilfield!" Huang Aihua then asked: "But how to solve the problem of blockage of the oil suction filter of the hydraulic pump?"

"The main reason for the blockage of the oil suction filter is that the paint is peeling off due to corrosion inside the oil tank, and the reason for this is that Sakurada Co., Ltd. has one less process in the production process. So it's all about the quality of the product. Li Weidong said.

"What's missing?" asked Huang Aihua immediately.

"Well, hehe......" Li Weidong picked up chopsticks, sandwiched a fried peanut, and then was silent.

"Oh, Mr. Li, what process is missing, what the hell are you telling me, I'm in a hurry!" Huang Aihua said very puzzled.

Li Weidong swallowed the peanuts in his mouth and said, "What I am talking about here is all a negotiation on paper, and your Yankuang technicians may not approve it. Otherwise, after eating, I will go to the field to see the equipment and then draw conclusions!"

After Li Weidong finished speaking, he gave Zhao Guodong a look.

Zhao Guodong immediately understood, and it was time to talk about 5,000 tons of coal.

......

In his last life, Li Weidong used to do the business of second-hand construction machinery and equipment.

At that time, it was the turn of the century, Li Weidong's career had a bit of scale, and it coincided with a wave of infrastructure construction in China, and construction machinery and equipment could make money, so Li Weidong decided to take the opportunity to make a fortune.

With Li Weidong's capital at that time, it was definitely far from enough to do construction machinery manufacturing, so Li Weidong could only do the trade of construction machinery, and it was also the trade of second-hand construction machinery.

The Asian financial crisis hit Japan and South Korea, as well as the new countries of Southeast Asia very hard, the original infrastructure of these countries was all shut down overnight, and all kinds of construction machinery can only be sold at a reduced price.

Most of the construction machinery used in these countries at that time was produced by RB, and the quality was still very good, and many machinery and equipment, even if they were second-hand, were more durable than domestic ones.

So Li Weidong saw the opportunity to buy construction machinery and equipment cheaply from those countries that were affected by the financial crisis, and then sold them to domestic contractors.

At that time, many contract foremen in China did not have much money, and they belonged to the kind of situation where the project was settled one day late, and the whole family had to eat soil the next day. They really can't afford to buy new engineering equipment, and these imported second-hand equipment just meets their needs.

It is said that this is a money-making business, but Li Weidong has been busy for more than a year, and has sold a lot of machinery and equipment, but in the end he did not make money, but almost lost money.

The reason is because of this Sakurada Co., Ltd.

At that time, a coal boss in Shanxi bought a batch of second-hand mining equipment through Li Weidong.

This is a big business, which can help Li Weidong make millions, so Li Weidong personally went to Indonesia and got a batch of coal mining equipment in a closed coal mine, which is produced by Sakurada Co., Ltd.

When this batch of equipment was bought, it could still operate normally, and it could be shipped back to China, and it didn't take long for the coal boss to use it, and there was a failure of the hydraulic cylinder components and the blockage of the hydraulic pump suction filter. After many repairs, it just can't be repaired.

Li Weidong still pays attention to honesty in business, and if there is a problem with the equipment, Li Weidong loses money to the coal boss. But this set of equipment was bought by Li Weidong from a collapsed coal mine in Indonesia, and it became impossible for Li Weidong to claim compensation.

Li Weidong could only admit it, swallowed the loss, and poured the second-hand mining equipment into the business, which was done in vain.

Because of this loss, Li Weidong has also been paying attention to this matter, and it was not until later that Li Weidong knew that the problem was with the manufacturer Sakurada Co., Ltd.

Coal particles enter the crevices, causing the hydraulic cylinder assembly to grind, which can be solved by a protective sleeve. However, the paint inside the fuel tank was corroded and clogged the suction filter of the hydraulic pump after it fell off, but Sakurada Co., Ltd. cut corners.

In the production process of hydraulic equipment, Sakurada Co., Ltd. sprayed a special green drape paint on the inside of the fuel tank, and Sakurada Co., Ltd. thought that the antioxidant effect of this paint was very good, so it did not phosphorylation treatment on the inner surface of the fuel tank, after all, phosphorylation treatment is to increase production costs.

However, the production environment in the coal mine is much worse than the normal environment, and in the mine, the green pendulum paint eventually falls off, and the oil tank that has not been phosphorylated produces a lot of impurities, clogging the suction filter of the hydraulic pump.

Now Li Weidong heard that Yankuang's hydraulic equipment was faulty, so he blindly guessed a wave of Sakurada Co., Ltd., and after learning that the manufacturer was really Sakurada Co., Ltd., Li Weidong knew that the root cause of the failure must be that the fuel tank was not phosphorylated.

This Sakurada Co., Ltd. is really black-hearted, knowing that it is his own cutting corners that has caused quality problems, not only does not provide after-sales service, but also deliberately links it with the wear and tear of hydraulic cylinder components, and then in the name of upgrading equipment, and then makes a fortune from Yankuang.

......

In the office of the director of Yankuang, Song Youliang was holding an imported electronic calculator, pressing it back and forth, and the sadness on his face became more and more intense.

"It's too expensive, the upgrade cost of $30,000 per device adds up to more than $3 million!" Song Youliang let out a long sigh, and the folds in the corners of his eyes became a little deeper because of worry.

Three million US dollars, at the official exchange rate, is 9 million yuan, and at the black market exchange rate, it is 30 million yuan. For a behemoth like Yankuang, whether it is 9 million yuan or 30 million yuan, it can be taken out, but if it is exchanged for 3 million US dollars, there is nothing to be done.

The country's foreign exchange is very tight, according to the regular process to apply to the superiors, three million can only be approved at most one million, and the approval process is very cumbersome, and when the money is approved, the equipment has long been in the nest.

"It seems that we can only agree to the conditions of the Wujiang Foreign Trade Department. Sakurada also has to negotiate the price again to see if it can be cheaper. Song Youliang sighed helplessly.

The production capacity of three million tons of coal is enough to make the entire Yankuang feel distressed for a while.

Just then, the phone rang.

"What? Are you saying that the failure of the equipment can be solved by the technical department?"

"There's an engineer here? Where did you come from? Qinghe Transportation Company? A transportation company, what kind of mechanical engineer can there be in a big place!"

"It's a college student! I guessed the cause of the hydraulic failure, which is consistent with the judgment of our technical department. Then this engineer has some skills!"

"What do they want? 5,000 tons of coal a month? Just give it to him!"

Song Youliang suddenly laughed: "How many cars can the transportation company in that small and broken place in Qinghe have? How much coal can be pulled away by holding him to death? You tell them that as long as the problem of hydraulic failure can be solved, let them open up to pull coal!"