We’ve been working with Bangda for ten years and always feel confident they can offer the best stainless steel bottles in the industry. We started with one SKU in 2011, and now we are buying hundreds from them. The quality of their bottles is excellent, with 4.9 points of review in our Amazon marketplaces. The lead time is perfect and the customer service is beyour our expectations. We like Bangda as our major supplier of bottles.