Afton Chemicals
London Road Bracknell, Berkshire RG 12 @uw England
Tel: 44(0)1344 420 666
www.aftonchemical.com

ASTM
100, Barr Harbor drive
P.O.box c700
w. Conshohocken. PA 19428-2959 USA
6108329500
www.astm.org

China zhejiang Int economc & Tech Cooperation Co. Ltd
3, Macheng Road Hangzhou China 310012
Tel: 0086 82661737, 8261739

Tamson Instruments bv
www.tamson.com