In the past two years, Eagle Sauce imposed bans on many subsidiaries of Huaxing Technology Group Company and included them in the entity list, and finally had to lift the ban under pressure.

However, Huaxing Defense Group and Huaxing Communication Equipment Company have always been targeted, interrupting chips at the beginning, but because Huaxing Technology Group Company established its own supply chain in Europe and Neon Country very early, it got rid of its dependence on Eagle Sauce chip manufacturers very early.

In recent years, many of the new products and equipment launched by Huaxing Technology Group have not used any domestic components from Eagle Sauce, and many parts come from some suppliers in Neon Country and Europe.

Eagle sauce's blockade of Huaxing Technology Group Company in the past few years can be said to be completely useless.

Although Huaxing Technology Group Company did not say that it would no longer use domestic chips and parts of Eagle Sauce, the launch of these products and equipment was tantamount to making a solemn statement-

Huaxing Technology Group Co., Ltd. has been able to produce 100% Chinese-made products "without a single eagle sauce chip".

Moreover, several technical laboratories and testing institutions have disassembled the latest listed products of Huaxing Technology Group, including flagship mobile phones, explored their internal structure, and then published analysis reports.

The analysis report pointed out that Huaxing Technology Group did not use any domestic components from Eagle Sauce for these products, and many parts came from Neon and European and domestic suppliers.

Many domestic media have also expressed concern about this, and Eagle Sauce's domestic technology company is getting permission from smartphone giant Huaxing Communication Equipment Company to resume business, but it may be too late, because this company is currently producing smartphones without Eagle Sauce's domestic chips.

At the same time, Eagle Sauce's domestic semiconductor industry association called on the National Assembly and the government to relax the ban on companies, emphasizing that its member companies are already in a difficult situation.

The Information Technology and Innovation Foundation also released a report pointing out that strict export restrictions on emerging technologies could lead to the loss of tens of billions of dollars in five years, threatening as many as 70,000 jobs, and the semiconductor industry alone could lose more than 9,000 jobs.

Some small chip manufacturers are also complaining, because the reduction in orders from companies including Huaxing Technology Group has a very big impact on their revenues.

After all, before Huaxing Technology Group Co., Ltd. and Huatai, ZTE and a large number of enterprises were reorganized by Eagle Sauce for more than a year, although in the end Eagle Sauce revoked the ban, but it was also a wake-up call for domestic enterprises, so many companies are learning from Huaxing Technology Group Company to increase the purchase volume in Europe and neon countries.

Although the Ministry of Eagle Sauce finally issued the "Huaxing Technology Group Company Sales License" to American companies, for Huaxing, this license has now become dispensable.

The headquarters of Huaxing Technology Group Company has also told its customers more than once: even without the technology of Eagle Sauce, Huaxing Technology Group can still survive.

After arriving at Qinglan Port on a yacht, Yang Jie also inspected the R&D center of Huaxing Rocket Launch Company.

In the upper stage engine development workshop, Yang Jie also saw the new upper stage engine developed by the technical team led by Ban Zhinong.

The height of this new upper stage engine is about 2 meters, and the whole volume looks very large.

"Yang Shao, we use a liquid oxygen methane engine with a thrust of 2 tons for the main engine of this upper stage engine, and we have carried out technical tests and verifications on the liquid oxygen methane engine for several years, and it is very mature in technology. ”

The reason why liquid oxygen methane engines are used in the upper stage engines is that the technical threshold is far lower than that of liquid oxygen and liquid hydrogen engines.

Compared with the liquid oxygen and liquid hydrogen engines with the highest specific impulse, the liquid oxygen methane engine is less difficult to design.

The density of liquid hydrogen is too low, and it needs a pressure pump with a very high speed to compress it, so that it can be fully mixed, and there are two pumps in the hydrogen-oxygen engine, a hydrogen pump, and an oxygen pump, and the gas from the gas engine has 80% of the power to be pumped to the hydrogen pump.

In addition, the process of storing fuel tanks in liquid oxygen and liquid hydrogen engines is also difficult, liquid hydrogen -253 °C, liquid oxygen -182 °C, the temperature difference between the two is large to do heat insulation, so the cost is also very high.

The temperature of liquid oxygen and methane is similar, and the processing process of fuel tanks of the two is greatly reduced.

Whether it is from the cost or from the target task, the liquid oxygen methane engine will greatly reduce the launch cost of the rocket, so Ban Zhinong led the technical team to carry out research and development in this area very early.

However, this technical team did not come up and began to develop large engines, but started from the upper stage engine.

Compared with the basic stage rocket, the structure of the upper stage is quite complex, coupled with frequent ignition and long working time, its development can be described as very difficult.

Huaxing Rocket Launch Company also spent money to purchase the mature upper stage engine design scheme from Ermao's Southern Design Bureau, and provided an engine design drawing with a 2-axis vector nozzle.

The design of the upper stage engine provided by the Southern Design Bureau is very similar to the simple and crisp warship Bird upper stage, which was originally used by the Lavochkin R&D and manufacturing consortium in 1988 for the Mars exploration project.

There are a lot of interesting engineering solutions in the Warship Bird, emphasizing practicality and simplicity, the shape is a rough industrial minimalist design style, which can make valuable space for the satellite in the fairing, and 6 aluminum alloy spherical boxes, four of which are fuel tanks, and the other two are equipment compartments.

This kind of spherical structure that looks like a tumor is superior in the mass and volume ratio, but it is not possible to rely on the thin-walled spherical tank to transmit the huge lifting force to the satellite during launch, so the design of the support rod piercing the spherical body of the equipment compartment is adopted, and the 8 support rods form the geometric configuration of the upper and lower end face cross-section is octagonal and the shape is 6 tanks.

This design is very successful, the weight control has been done to the extreme, the struts are welded with the spherical tank, and the tank will share part of the load force, but the average thickness of the spherical wall is controlled at 1.5~2.0 mm.

The Southern Design Bureau also directly modified the design plan of the warship bird stage, and helped the Huaxing Rocket Launch Company to manufacture it, and passed the technical verification test, helping the Huaxing Rocket Launch Company successfully send a large number of satellites to the predetermined orbit.

The upper stage needs to be started many times in the task, and the fuel is selected as the highly toxic metamethylhydrazine as the fuel, and nitrogen tetroxide is used as the oxidant, which eliminates the need for igniter, with high maturity and good reliability.

Although the technology of this upper stage is very mature, Yang Jie is still not satisfied with this, and he also asked Ban Zhinong to redesign a more advanced upper stage and use a liquid oxygen methane engine as the main engine.