- Itoko enterprises Ltd
- Address:Flat 613, Delta House, 3 On Yiu Street,
- Innovation Technology Co, Ltd.
- Address:Unit C & D, 11/F, Block 1, Camelpaint Building, 62 Hoi Yuen Road, Kwun Tung, Kowloon, Hong Kong
- Best-Q Trading Co.,Ltd
- Address:No. 29, Austin Road,
- G-star Industrial Company
- Address:ROOM 1240, TUNG YING BLDG, 100 NATHAN ROAD
- Excel Asia Pacific Limited.
- Address:Lai Chi Kok
- PPP Electronics Co. Ltd.
- Address:BLK A, 15/F HILLIER COMM., BLDG HONG KONG, 65-67 BONHAM STRAND EAST
- SONATA INDUSTRIAL CO. LIMITED
- Address:Flat 15, 6/F, Block B, Kailey Industrial Centre, 12 Fung Yip Street, Chai Wan
- Forward AV System Ltd
- Address:6 / F, 50 Hoi Yuen Road, Kwun Tong
- Fire Dimensions
- Address:Room 911, Level 9,
- Qsound Electronics Co., Limited
- Address:UNIT 04, 7 / F, BRIGHT WAY TOWER, NO. 33 MONG KOK ROAD
- SPL (Hong Kong) Limited
- Address:Rm. 2507, 25 / F, Prosperity Centre, 25 Chong Yip St. , Kwun Tong,
- Marksman Industrial Ltd.
- Address:Room 702, 9 Chong Yip Street, Kwun Tong, Kowloon,
- HAO WAY LIMITED
- Address:FLAT / RM 1701 17 / F Henan BUILDING 90 JAFFE ROAD WANCHAI
- G&J Ltd.
- Address:Flat C,16/F., Po Shau Centre,115 How Ming Street, Kwun Tong
- BARDL AUDIO
- Address:North Industrial Distric
- Tenfei Mas
- Address:China(Mainland)
- Ampere Fire Eng Co., Ltd
- Address:Hong Kong38-48 Warf Rord, Shop 8B, North point,
- Zenmei Industry Company
- Address:15 / F. , Wing Choeng Comm. Bldg. , Central,
- Wealthland (Audio) Ltd
- Address:Rm 10, 8 / F, Block B, Tonic Industrial Centre, 19 Lam Hing St,
- Mong's Security Systems Company
- Address:Room 801, San Toi Building, No. 137-139 Connaught Road, Central