To get different levels of color on the fabric is another major feature of the washing process. don't use acid in acid washing or ice washing process. Pumice stones pre-soaked in a bleach solution, dry fry without water, Then in the special cylinder through pumice stone directly with the clothing grinding, used pumice stone to oxidizes the friction points away, discolor the cloth irregularly forming white spots that resemble snowflakes. This pant through clever washing and dyeing that the jeans present a visual effect similar to "moldy", imprinting the subtle natural spots on the denim.1. Do you have a minimum order quantity? Yes, we require all international orders to have an ongoing minimum order quantity. At least 100pcs per colors and models. 2.Can you supply the relevant documentation? Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required. 3. What is the average lead time? For samples, the lead time is about 10 days. For mass production, the lead time is 30-60 days after receiving the deposit payment. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do so. 4. What kinds of payment methods do you accept? You can make the payment to our bank account, Western Union or PayPal: 30% deposit in advance, 70% balance against the copy of B/L.