Head Office

Associated Environmental Systems Limited

Unit 1221-1223, 12/F, Metro Centre II,

21 Lam Hing Street, Kowloon Bay,

Hong Kong

Tel: (852) 2798 7828

Fax: (852) 2798 7738

Email: info@aesl.hk

Group Company

Beijing Advance Environmental Engineering & Systems Limited

Room B706, Asia Pacific Plaza,

No.21 Building Pingyuanli,

Xicheng District, Beijing, China 100054

Tel: (86) 10 6597 3289

Fax: (86) 10 6597 4182

Email: info@aesl.hk

Shanghai Liaison Office

Room 409, 4F, Ai Jia International Building

No.288 Wu Hua Road

Shanghai, China 200086

Tel: (86) 21 6466 1221

Fax: (86) 21 6466 1218

Email: info@aesl.hk