Free Samples before Placing an Order We are happy to offer free samples for your review before any purchase. If your order does not match the quality of the approved samples, we guarantee a refund or return. Here is how to request free samples step by step: Please Note:
Both bottle neck finish and cap size follow and use a uniform standard and convention to describe their screw thread sizes and styles. This standard was developed by the Glass Packaging Institute (GPI) and the Plastics Industry Association (SPI). Understand Two Numbers: The screw thread sizes and styles are usually represented by two numbers: The two pictures above …