ALPA SYSTEMS INTERNATIONAL Dear M. Director, Our company, located in the south of France is working on food preservation in walk-in coolers and refrigerators, especially vegetables, fruits and cut flowers. We work on adsorbants that we place in the coolers to eliminate ethylene from the air. (temperature 0?C to 10?C, humidity from 80% to 100%) Our adsorbants are placed in filters or adorbers. We have red that in different publications that the 3 Angstrom zeolite A has a high capacity for ethylene and is readily regenerated. So we are very interested in molecular sieves or synthetic zeolites able to aborb ethylene gas from the air. The best product would be an adsorbant able to : ~ absorb ethylene gas (C2H4) ~ do not absorb humidity (H20) ~ easy to regenerate by heating (oven or microwave) We are interested in grains (2-5 mm) or powder if the product is hydrophobic. 1) Could you tell me which of your products could respond to our concern?  2) Could you send us technical informations about your products you have about ethylene adsorption (quantity of ethylene by g, saturation) and humidity adsorption? 3) Could you send us samples of the products (200g or more) you think could be good for our application ? 4) Could you give me informations about price of these product for 10 metric tons, 20 tons, 50 tons, 100 tons? We work with French government and will have the possibity to make trials in laboratory (CIRAD, ADEME) to confirm the capacity of the product we will choose to absorb ethylene gas in walk-in-coolers and refrigerators. If you come to France, we would be pleased to receive you in our office in the south of France to discuss with you. Sincerely. Jean-Marc PARE Director Can you answer me by mail ?