Vermiculite

We are offering vermiculite/expanded vermiculite. 1. Components (the following values are from one test result): sio2 34-53% fe2o3 9-20% al2o3 13-17% mgo 7-18% cao 0.5-2% 2. Specifications the sizes are as the following: 0.3-1mm, 1-2mm, 2-4mm, 3-7mm 3 the characters 3.1 exfoliation 3.2 moisture retention 3.3 air circulation 3.4 low density 3.5 insulating and fire resistant 3.6 multi cellular germination