Q: Is it leak?A: No,It isn't.our material is high quality 100% natural bamboo and every cap is checked carefully by professional people before packing.Q: Is it waterproof?A: Yes,It is.cap surface is painting at least 2 times. It depends on customer’s quality requirement Q: Is logo available?A: Yes,It is available.screen printing,laser engraving and heat transfer printing. It can meet customer 's beauty needs. Q: Can I have my unique design(size,volume,pattern,etc)?A: Yes,certainly.customer's design such as size,volume,pattern,etc is welcomed. Q: Is your bamboo products 100% natural&healthy?A: Yes,with SGS certification! Q: What’s your MOQ?A: Our MOQ is 5000pcs! Q: Can you provide us sample?A: Yes,sample charged accordingly free, sample time for 1-2days customized sample time for 3~5days. Q:How to delivery sample?A:By courier,DHL,UPS,TNT, Fedex. Q: How long is your mass production time?A: 15days around for MOQ.our month capacity is 100,000pcs for simple bamboo products! Q: How to delivery?A: By sea or by air or by courier like DHL,UPS, Fedex. Q: What’s your Payment term?A: T/T or L/C or Paypal or Western union30% deposit,the balance paid against B/L copy!