Tel：+86 010-60735920/60735930

Investor Hotline:+86 010-60735931

Fax： 010-89700424

Sales Hotline:+86 010-60735932

Email：[email protected]

Purchase Email：[email protected]

join us ：[email protected]

Investor Relations Email：[email protected]

Zip Code：102200

Address：No.2 Huachang Rd.,Changping Science Park,Changping,Beijing 102200,P.R.C