Dallas was a UK musical instrument manufacturing and distribution company, founded by John E. Dallas. Dallas began making banjos in 1873, eventually moving to premises at 415 Strand. In 1905-1906 Dallas' three sons were given directorships and the firm's title changed to John E. Dallas and Sons.

By the late 1920s, Dallas instruments were being mass produced under the brand name "Jedson." derived from Dallas' initials, "J.E.D", and "Sons". When John Dallas died in 1921 the form became a private limited company

In 1926 The firm moved to larger premises, at 6-10 Betterton Street, Covent Garden, London, WC2, and became a wholesale importer and distributer of musical instruments. They moved again to Dallas moved to Ridgmount Street in 1937 (concinding with the introduction of the Ridgmount brand), before eventuallu settling in Clifton Street, EC2.

Tenayo is a Korean/Chinese brand with a full range of instruments and accessories. They make some interesting models including the Koyabu 12 string tap guitar and a budget version of the Yamaha silent guitar. The German Thomann company is a major distributer of Tenayo instruments. The tap guitars are available from http://tap-guitar.eu/

Aiersi is the retail brand name of the Chinese Sinomusik company. They are a large OEM professional guitar supplier and exporter from China whose guitar range includes: classical guitars, children's guitars, flamenco guitars, 12-string guitars, parlor guitars, acoustic guitars, Hawaiian guitars, Dobro guitars, bass guitars and electric guitars. 

The SX brand was launched in 1998 by an established Taiwanese guitar company. They founded a new company Team International Music Co., Ltd. in the 1990s when making guitars in Taiwan became too expensive and they moved production to China. They had originally planned to use the Essex brand name - but that was already taken so they settled on SX. The new brand proved to be a success and by 2003 the company were able to stop taking OEM orders to focus exclusively on SX instruments. Although Team does not own the Chinese factories they have their own quality control staff at each factories to oversee the production and make initial inspections.
With 4 drying rooms in their warehouse, capable of drying 6000 guitars at the same time. All the guitars are dried for 7 to 15 days (depending on the climate of the destination) and inspected before they are shipped out.

Source: SX website (28 July 2021)

This is a category for all items that have not yet been assigned a proper brand name.