Chinese Manufacturer of 1.5ml Screw Neck Vial for HPLC Testing Dec 19, 2019 · Zhejiang Lover Company specializes in laboratory 1.5ml Screw Neck Vial research and development work for more than 10 years, such as HPLC / GC / MS automatic sample bottle, PP bottle cap , PTFE / silicone spacer, with SGS certificate inserts.