What does a projector look good for? Let you choose, will you choose Newman?

I suggest you don't do it.,I've done domestic projection**,I've done three brands.,I'm not sure which brand to say.。 I'm selling it in**,Domestic projections are generally online,There are very few physical stores。

The profit is quite high, selling one to make money between 800-1200, and the curtain is also profitable.

I have sold more than 20 machines in total,The effect of domestic projection is not very good,Most of them are DIY technology,No matter how good the domestic projection,It's not as good as the low-end imported,For example, Benq's 511+。

The color cast of domestic projection image quality is very serious, the machine is bulky, the effect is poor, and there are few functions.

Why didn't I do it later?

Exhausted saliva,6Sold more than 20 machines in 6 months,From a conscience point of view,I feel sorry for these kind users,Generally buy domestic projections,Are movie fans and enthusiasts,They are poor,No money to buy imports,So buy domestic,At the same time, domestic advertisements are still playing about 100 yuan The bulb can be used for about 8000 hours。

A machine of 2200 yuan can make 1200 yuan, and the profit is okay.

However, the failure rate is too high, 50% after half a year of use, and it is seriously darkened, and the cost of after-sales service is very high, and the freight is 100-150 yuan.

Later, I switched to BenQ, and I can't tell you about the profit and sales.

I always think 3M's projector is good.

The Newman projection was proposed by Newman in 1995. Like the saw projection, it represents the spatial relationship between atoms or clusters of atoms connected by two adjacent atoms. This projection is to put a three-dimensional model of the molecule (such as ethane) in front of your eyes, observe it from the extension line of the single bond of c c, and use a large circle (or no circle) to represent the carbon atom on the single bond of c c, and the two circles before and after are actually overlapping, so only one can be drawn on the paper.

The three hydrogen atoms in front of the circle represent the three hydrogen atoms on the carbon atom closer to the eye, and the three hydrogen atoms above the circle represent the three hydrogen atoms on the carbon atom that is farther away from the eye. The distance between the front and back three C h bonds is equal, and the angular distance is 120°. The Newman projection of ethane thus obtained is as follows:

A model of a bat for ethane. Looking in the direction of the arrow, the Newman projection ( ) is a simplified Newman projection, and the dashed line represents the C h bond on the carbon atom behind it.

Hexane perspective does not understand.