Something Need to say first

I am not so familiar about the watch market. The information all based on the Internet. I just collected all the information you may need.

Eoniq — https://www.eoniq.co/

This website is build by EONIQ (HK) Limited.

I checked the company information:

EONIQ (HK) Limited

You could find it is a small DIY Watch company. Only start from 2014.09.23. You could pay 22 HK$ to get more information. But I don't think you need.

And they sell their watch in Indiegogo.

What is Indiegogo:

Indiegogo /ˌɪndiˈɡoʊɡoʊ/ is an international crowdfunding website founded in 2008 by Danae Ringelmann,[2]
Slava Rubin, and Eric Schell. Its headquarters are in San Francisco, California. The site is one of the first sites to offer crowd funding. Indiegogo allows people to solicit funds for an idea, charity, or start-up business. Indiegogo charges a 5% fee on contributions. This charge is in addition to credit card and PayPal charges that range from 3.5% to 9%.

So you could find it. Eoniq is just a small watch maker based in Hongkong. It sells DIY watch via Indiegogo.

Because it near Shenzhen, Guangdong, China. In Guangdong province. There are lot of watch factories. I think they may buy some parts from it and make the watch by itself.

I will write later to introduction about the watch factory in Guangdong.
It related to this company you need me to dig: Shenhua .

So I report Shenhua in the second.

Shenhua — https://www.amazon.co.uk/Automatic-Skeleton-Mechanical-Stainless-Wristwatch/dp/B00B22CV7A

You could find this seller in Amazon UK is

Jiabao

It is also a new company in HK. But it is just a online retailer. The Shenhua watch is Guangdong brand. In chinese: "绅华“.

Shenhua watch

This is a really cheap brand, made by no name factory. The price is RMB. Kind fake automatic watch. You could buy it just from 1688.com in China. Or you could just go to Guangzhou west train station. You will find a lot cheap, fake watch seller.

Aatos — https://www.amazon.co.uk/Watches-Aatos/s?ie=UTF8&field-brandtextbin=Aatos&page=1&rh=n%3A328228011

The same situation about this Aatos brand watch. According to the price. It is also fake，just made look like Tourbillon watch, but using a cheap mechanical watch movement.

fake tourbillon watches

It is kind the same model you found in Aatos.

Shinola — http://www.shinola.com/

It is a truly US brand.

Shinola is an American luxury lifestyle brand which specializes in watches, bicycles, and leather goods among other items. Founded in 2011, its name is a nod to the former Shinola shoe polish company that operated in the early- and mid-20th century. The current company is owned and operated by Bedrock Brands, a privately owned Texas investment group, and was launched by Tom Kartsotis,[1]
one of the founders of the Fossil Group retail conglomerate.[2]
In June 2016, the FTC ordered the company to stop using "made in america" as a slogan as "100% of the cost of materials used to make certain watches is attributable to imported materials." [3]

Most of the watch is quartz watch. The price is kind high.