- mavas musical store
- Address:19 Chetupon Road, Chiang Mai
- billymai trading company
- Address:315 Convent Road, Silom, Bangrak
- Daido Electronics Co Ltd
- Address:Rojana Industrial Park
- H.R. Silvine Electronics ltd
- Address:Vorawat Bldg 22nd Floor
- Omron Electronics Co Ltd
- Address:555 Phaholyothin Rd
1