This is Iris . We mainly supply chemical products with high purity and competitive price inlcuding BMK, PMK, BDO and BK4 and so on. And we also provides samples. Besides, we have our own overseas warehouse and provide double clearance service. The goods can be delivered within 7 to 12 days. All the price are door to door price. You can receive the goods directly from me. No need worry about the customs clearance. If you need to visit us, please contact me via whatsapp+8619831381159. Or you can via telegram @irishuang123