Dear Mr Liu: we got your ZengGuan Production Co., Ltd. information through our U.S.A Representatve.Dr. Ghaleb Hamadeh of Alameda CA.94501 . He tried to call you by Phone but always get your Fax Machine.His Coordinates are: Tel: 510-522-3345 email address: ghamadeh1@comcast.net We are in the market to purchase for our affiliate 2500 mt detergent powderto be packed in 500 grms net polythene sachets inside cartons that contains 24 sachets. Need to know by return fax your email address& phone no. to contact you and send you complete details of the specifications, packing and other pertinent terms conditions of the detergent powder needed