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About product and suppliers:
        Alibaba.com offers 2,294 hps 400w bulb products. About 30% of these are high pressure sodium lamps, 29% are led bulb lights, and 1% are metal halide lamps. 

A wide variety of hps 400w bulb options are available to you, such as plant growth, road. You can also choose from bulb lights, grow lights, and street lights. As well as from led, hid. And whether hps 400w bulb is aluminum, aluminum alloy, or glass. 

There are 2,294 hps 400w bulb suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of hps 400w bulb respectively. 

Hps 400w bulb products are most popular in North America, Western Europe, and Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 498 with ISO9001, 156 with Other, and 26 with ISO14001 certification.