Wholesale Round Shoulder Glass Bottles Cylindrical for Whiskey 330ml 500ml 700ml. Eco-Friendly Glass Material: Made of thickened glass with a transparent and beautiful appearance for better aesthetics. Flexible Customization Options: Supports personalized customization including logo printing, label printing, and screen printing. OEM and ODM Services: Full OEM and ODM services available with custom design and mold making capabilities. Comprehensive Quality Control: Each bottle undergoes a 3-time leak test before packing to ensure quality. Professional Design Team: Dedicated design management team handles product design, mold making, and assembly. Fast Delivery for Stock Items: Stock products are shipped within 7 days after receiving payment. Defective Product Replacement: 1:1 replacement provided for any defective bottles caused by the manufacturer.