About product and suppliers:
            1,412 bitumen products are offered for sale by suppliers on Alibaba.com, of which waterproof membrane accounts for 17%, bitumen accounts for 5%. 

A wide variety of bitumen options are available to you, 

There are 1,412 suppliers who sells bitumen on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of bitumen supply is 100% respectively.