Guangzhou,Guangdong-Seven-zone PU mattresses have been commercialised by BNP,a sister company of Korea's DUT.Unlike conventional mattresses,the zones are made inside the block on the conveyor.Although the setup is more expensive than it is for conventional mattress manufacturing methods,the individual mattresses are cheaper to make.This is because there is no need to cut and glue mattress components together,said Jung.
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