Borosilicate 3.3 Condernser,liebing: Material:Borosilicate 3.3 Certification: ISO 9001 Custom design is acceptable Borosilicate 3.3 Condernser,liebing (1)Material:heat resistant 3.3 borosilicate glass(2)joints:14# 19# 24# 29#(3)all sizes:150/14,14 200/14,14 200/19,19 300/19,19 400/19,19 500/19,19 600/19,19 200/24,24 300/24,24 400/24,24 500/24,24 600/24,24 200/29,29 300/29,29 400/29,29 500/29,29 ...