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About product and suppliers:
        Alibaba.com offers 4,343 fitting insertion products. About 38% of these are pipe fittings, 6% are nuts. 

A wide variety of fitting insertion options are available to you, such as copper, pp-r, and plastic. You can also choose from coupling, tee, and union. As well as from female, welding, and male. And whether fitting insertion is equal, or reducing. 

There are 4,343 fitting insertion suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of fitting insertion respectively. 

Fitting insertion products are most popular in Northern Europe, North America, and Southern Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,231 with ISO9001, 1,345 with Other, and 1,205 with ISO14001 certification.