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: Circular Sight Glass Lense, Boiler Level Gauge Glass, Round Sight Glass, Gauge Level Glass, Water Level Glass Tube, Water Tank Sight Glass, Borosilicate Glass, Oil Sight Gauge, Boiler Level Gauge, Transparent Gauge Glass