1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

1.Best quality 2.Competitive price 3.Fast Delivery 4.Excellent service. 5.Free sample(10-20g or enough to detection) and Unconditional assume response 6.Packaging: 1kg with double plastic container inside/Aluminum foil bag outside 25 kg with