Sichuan Elune Glass Tube Co., Ltd. is a self-publishing company. Good price, professional service, fast delivery! A 100 for product quality guarantee leads to a growing market. Give us the opportunity to work together to reach a larger product market. our products: Borosilicate Sight Glass, Oil Tank Sight Glass, Oil Level Gauge, Gauge Glass Tubes, Oil Tank Sight Gauge, Oil Sight Gauge, Circular Sight Glasses, Glass Tube Level Indicator, Sight Flow Glass, Hydraulic Tank Sight Level Gauge