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About product and suppliers:
        Alibaba.com offers 235 roof vent flashing products. About 79% of these are waterproof membrane, 34% are other rubber products, and 11% are hvac systems & parts. 

A wide variety of roof vent flashing options are available to you, such as hvac systems, ventilation, and waterproof membrane. You can also choose from free samples. 

There are 235 roof vent flashing suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of roof vent flashing respectively. 

Roof vent flashing products are most popular in Southeast Asia, Mid East, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 235 with ISO9001, 175 with ISO14001, and 170 with OHSAS18001 certification.