This PET-4#-Plastic Dropper Liquid Bottle CRC & Tamper Evident Cap Lock Ring Tip is perfect for e-liquid packaging, home lab use, chemicals, ink, paint pigment bottle, dispensing, and more! We're a manufacturer in China produces these bottles in 30ml (1oz), 60ml (2oz), 120ml (4oz) sizes (and more) with a CRC & tamper proof cap, a lock ring tip, and a right and leak proof design for effortless squeezing. We are proud to offer wholesale to US and Europe countries.