Def group is a leading professional chemical supplier . Our Head-office is located in HongKong, the capital of China. We have our own factory in local production city and also we share holder with some other factories for diversifying and being competitive in related products. Profession creates chances, service wins successes. For almost 15 years experience in this field, we had gathered very professional stuff to enhance our business competition. Also with our core conception of customer-oriented and credit-first, we gain great reputation from our clients, which promote our business runs very fast all over the world.