Tecno Lab S.A. de C.V. Norte 23 A, Edif. 67 Entrada K Dpto 203 Unid. Lindavista Vallejo Mexico D.F. 07720 Mexico Tel. ( 55 ) 55859214 Fax ( 55 ) 55868510 chafloque@tecno-labmex.com chafloque@netscape.net jlchafloqueolivera@yahoo.com manuelchafloque@gmail.com