Glass Jar, Glass Bottle, Pet Preform manufacturer / supplier in China, offering 28mm Pco 1810 Neck 18g 25g 30g Pet Preform for Plastic Bottle, 28mm Short Neck Pco1881 1810 Pet Plastic Preform for Water Bottle, Factory Wholesale 30mm Neck 14G 16g 17g 18g 19g 20g 21g 23G 25g Pet Preform for Beverage Drink Bottles and so on.