We supply research chemicals with  best quality and competitive price . KU crystal  is  our latest product. We have USA warehouse, delivery only 3-4 days. fast and safe. All our products are lab - tested and products were identified as the correct product. Our company is specialized in RC products for many years. We got great feedback and won more and more clients because of these advantages. If you want to check the quality, a sample is suggested . please contact me at any time if you are interested.