Hi Mike,
9 times out of 10, if you order bottles from a random chinese company, you will get terrible quality bottles. Both cosmetic and functional defects. That said, there are a handful of factories that are capable of making very good bottles. But even with these factories, you still cannot totally rely on their quality control processes. Your best bet is to work with a U.S. company like us or others like us, who handle all of the chinese manufacturing for you. We have been doing this for over 10 years and have our own team of QC workers on the ground in China. While our prices might not be quite as low as ordering directly from the chinese factory, it is still much lower than American and European glass factories. And we can guarantee that you will receive a high quality product. Not just for the bottles, but also labeling and decoration, closures, shipper cartons, and anything else packaging related. I would be happy to discuss more if you wanted to call or email. michael@fusion-glassworks.com. 855-503-8746.
-Michael Ferchak
www.fusion-glassworks.com