The trial effect of the large bump condom is not ideal, it may be that the bump is too large, which increases the friction coefficient and causes it to fall off easily in the process, but Duo'er said that she feels much more comfortable than not wearing it or wearing a fish float.

Shang Tao did not give up, and after making sure that Duo'er did not have discomfort and allergic symptoms, he simply tested the other two big bump condoms on Li Ling'er and Su Chan'er respectively, and the results showed that the two of them were easier to fall off than Duo'er, during the test, Li Ling'er fell off twice, and Su Chan'er fell off three times, but in addition to being easy to fall off, the two women also said that they did feel more comfortable than not taking them.

Shang Tao immediately thought of an improvement, he went to the market to buy a whetstone, and after gradually refining the mold tails of the three large bump condoms, he made three big bump condoms out.

After a simple improvement, Shang Tao tested it again on the three women the next day, and this time it basically solved the problem of easy to fall off, and the use effect was unanimously praised by the three women.

Konka played a little bit because she failed to participate in the test of the big bump condom, and angrily said that she either didn't wear a condom or didn't touch her, Shang Tao knew that she was jealous that Wang Xiaoying was pregnant and was playing on the topic.

Since Konka didn't let Xiao Xianzi touch it, Shang Tao simply pulled Su Chan'er's maid Xiaocui into bed and tested the non-bumpy condom.

After experiencing the initial severe pain, Xiao Cui whispered, "Childe, you forgot to wear a condom." ”

"It's okay, it's the same to wear it later......"

Well, this is actually a test method, and many men don't like to wear it at first, and it's common to put it on again when they want to.

However, Shang Tao's motive is not actually to test whether the condom will slip in this state, as for his motive, only the old driver understands.

After happily testing the bump-free condom with Xiaocui, Shang Tao saw that Konka's face was so gloomy that he could almost drip water.

So, Shang Tao accepted it when he saw it, happily agreed to her request, didn't bring a condom or wear a fish drift, and ate her like that.

After finishing the incident, Konka complained in an angry whisper: "Brother Shang Gongzi, you are not in the house......

"Oh, I don't blame me, I ran out of bullets today."

"What is a bullet?"

"It's your favorite thing to eat."

"People don't like to eat it."

"Then you're still complaining to me that I haven't eaten?"

"Humph! Bad guys, ignore you. Konka turned around angrily and turned her back to Shang Tao.

……

Shang Tao is very satisfied with the results of the two condom tests, but this has not solved the packaging problem, there is no plastic in this world, because the raw material of plastic is oil, so Shang Tao does not have the conditions to produce plastic now.

However, the seven-fifth-in-the-seventh investigation team gave a ratio of rubber liquid to replace plastic, and the rubber film produced by this ratio is not very malleable, which is suitable for replacing the plastic packaging of condoms, and even if it is large enough, it can also replace the kind of film used in plastic greenhouses.

The next day, Shang Tao began to mix this rubber liquid according to this ratio, and at the same time, he also cut a few rectangular thin bamboo slices, and then put the thin bamboo slices into this rubber liquid, took them out and dried them for a period of time, and then dried them according to the method of drying condoms.

After drying, this square transparent film pouch can be used to hold rolled condoms.

Shang Tao did not choose the silicone oil used by condoms in the future generations of the earth as a lubricant, in fact, it is not that he cares about the negligible damage of silicone oil to women.

Instead, he wanted to produce silicone oil, which was a cumbersome system project, so he simply used olive oil, which was slightly more expensive, because olive oil was directly available on the market.

When everything is ready, Shang Tao turns the condom removed from the mold over and puts it on the mold, then brushes the outside of the condom with olive oil, then rolls up the condom and takes it off and puts it into a square transparent rubber bag, and finally, seals the transparent square pouch with a simple sealer prepared in advance.

This simple sealer, to put it bluntly, is two iron bars, after heating to the appropriate temperature, press the handle to make the two iron bars fit together, and squeeze the mouth of the rubber pouch hard, so as to achieve the purpose of sealing the rubber pouch.

And that's not all, because the condom bag doesn't even have a label on it, so it's obviously not suitable for selling as a commodity, and the yield is too low according to the current manual drying practice.

Therefore, in the next few days, Shang Tao went to the glass workshop to order two hundred glass condom molds, because if you want to mass produce, you can only increase the number of molds.

Shang Tao found a carpentry workshop and asked the carpenter master to make two hundred condoms according to two different types of condoms, the packaging of the convex condoms is slightly larger than that of ultra-thin condoms, and the wood chips are also slightly thicker.

The 400 pieces of wood seemed simple, but the delivery time was more than twice as long as the glass condom mold, because Shang Tao asked the master carver to carve the pattern he specified on the front and back of the rectangular wood chips.

This pattern is actually the LOGO and product name of the condom, as well as the text description.

The LOGO of the condom is from Su Chan'er's hand, and the shape of the LOGO is two simple figures with back-entry copulation, and below the LOGO, there are three fly-headed small blocks of "Huanhao set".

As for the back of the wood chip, the carpenter was asked to carve the words "ultra-thin" and "bump" respectively, and there was a line of small words below the model: "Use: to increase interest and avoid pregnancy".

Of course, the text is all reversed, so that when the pouch is removed from the mold, turn it over so that the pattern is facing outward, and the text will be displayed squarely.

Shang Tao not only customized the condom packaging bag mold in this carpentry workshop, but also customized 200 large bump condom molds, of course, the material is hardwood.

In addition, Shang Tao ordered more than a dozen stoves to be installed in a room, which is used as a baking room, and the condom molds and packaging bag molds soaked in rubber liquid will be directly hung in this oven to dry, so there is no need to manually turn them.

Ten days later, all the molds were in place, Shang Tao's silver money was all gone, not to mention, he also "borrowed" some silver from Konka to settle all the payments.

In the next two days, Shang Tao led six women to produce the first batch of 1,000 Huanhao sets, of which 500 were ultra-thin and the other 500 were convex types.

In the evening, it was rare that the seven of them did not stay in bed, but sat around the mahogany square table in the hall.

Shang Tao took out his mobile phone from the drawer of the counter in the east wing, this was the first time he had left the grassland this time, because he couldn't go back to the grassland in the next few months, and the mobile phone needed to be used on the full moon night every month.

Shang Tao pressed a few numbers on the mobile phone calculator from time to time, and then wrote and drew on a large stack of white paper in front of him.

"It's finally been figured out." Shang Tao pressed and held the power button of the phone, and then swiped his finger across the screen to turn it off.

"Brother Shang Gongzi, how much?" Konka couldn't help but ask.

"Counting the loss of molds and equipment, as well as labor, the cost of ultra-thin condoms is about 9 copper plates, and the bump type is about 12."

"So cheap, huh? Wouldn't that be cheaper than a fish float? Konka was surprised.

"Please, that's the retail price, and we're the cost price."

Wang Xiaoying interjected: "Even if we sell it at the price of 15 copper plates for a high-quality fish drift, we can earn 6 copper plates for each one, and then buy more slaves to come back, if we produce 3,000 a day, it will be 180 taels of silver, 5,400 taels a month, and the net profit for a year will be 64,800 taels." And we can continue to scale......"

Li Ling'er didn't wait for Wang Xiaoying to finish her reverie, so she interjected: "I think the price can be higher at the beginning, such as one tael of silver for the ultra-thin type and one tael of silver for the convex type, after all, this is a new thing." ”

Su Chan'er said: "This price is still too low, I think the ultra-thin type will cost at least five taels of silver, and the convex type will cost ten taels of silver, because this kind of condom is too strong, I estimate that even if it is used hundreds of times, it will not necessarily break." ”

Su Chan'er woke up the dreamer with a word, Shang Tao's thinking was still in the cognition of the earth's future life, he was used to the concept of throwing it away once he used it, and completely ignored the problem that the condom can be used again and again.

"Well, what Cicada said makes sense, then tomorrow I will talk to Tongjitang at the shipping price of five taels and ten taels of ultra-thin and ten taels of convex type."

"Brother Shang Gongzi, I think you should first consign them in all pharmacies in the city, and after the condoms are approved by everyone, I estimate that when we go to deliver them again, their big shopkeeper will take the initiative to talk to us about the issue of agency, and it will naturally be more beneficial for us to raise it by them."

"It's still my Yingying smart, I'm going to reward you well tonight......"

"No way!" The girls immediately objected: "Shang Gongzi's brother Yingying is pregnant, so it is not suitable for sexual intercourse." ”

After a while, Wang Xiaoying snorted and said, "It should be okay to be lighter, right?" ”

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