We are offering White Willow Bark Extract with following specifications: Relieve acute and chronic pain, including headache, back and neck pain, muscle aches, and menstrual cramps; control arthritis discomforts. We can supply white willow bark P.E. at any quantities with competitive prices and specification needed. So please contact us for more specification. Packaging Details: cardboard drums, with double aseptic food poly bags inside. Or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.We have passed HACCP Certificate, ISO9001 Certificate and we have USA FDA register number. And we are also Alibaba Chinese supplier. Now, we can do commodity inspection. If interested, kindly please contact me via sales22 at lgberry dot com dot cn. We hope you will give us reply by return mail so that we should start business with you immediately.