Gas Chromatography-analysis Lab 2ml Aijiren Vials With Write . Aijiren own 5,000 SQM factory area with 2,000 SQM 100,000 grade cleaning room. As the biggest manufacturer of HPLC/GC Autosampler Vials, Caps, and septa in China, we devote to analytical test and laboratory consumables with high quality, effecient service and favorable price.