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About product and suppliers:
        Alibaba.com offers 8,677 tub unit products. About 6% of these are prefab houses, 1% are evaporator, and 1% are shower rooms. 

A wide variety of tub unit options are available to you, such as home theatre, computer, and portable audio player. You can also choose from sandwich panel, steel, and container. As well as from free samples, paid samples. 

There are 8,594 tub unit suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United States, and United Kingdom, which supply 64%, 18%, and 9% of tub unit respectively. 

Tub unit products are most popular in North America, Western Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 999 with ISO9001, 760 with Other, and 267 with ISO14001 certification.