The Glass Packaging Institute (GPI), a trade association representing the North American glass container industry, has put forth policies to standardize neck finishes across the industry.
I-Glass Packaging Institute (GPI), inhlangano ukuhweba emelela North American ingilazi esitsheni umkhakha, uye welula izinqubomgomo elifanele entanyeni eqeda kuyo yonke imboni.