After-sale Service :   1.We specialize in this filed fo more than 10year . our products exported to all over the world and established the long-term business relations with them 2.Good quality is one of the biggest secret to success ,u can get the best quality and service from us . 3.Because we are the manufacturer of these chemicals ,usually we have more than 50kg in stock ,so the most competitive price you will get from us 4.Fast delivery we send package within 24 hours after confirm the payment . 5.Professional ship agent ,will give proper suggestion depend on country and package ,make sure you will receive the packing 100% and promise resend if the package have any problem . 6.10-100g sample order are accepted , welcome sample order to try our quality and service .