
CHANGRONGndi kampani yogawana ndi malonda, yomwe inakhazikitsidwa mu 2005 .Zomwe zimayang'ana pakupanga mitundu yonse ya mipope yabwino ya HDPE & zopangira (kuchokera ku20-1600mm, SDR26/SDR21/SDR17/SDR11/SDR9/SDR7.4), ndi kugulitsa zopangira PP compression, zida zowotcherera mapaipi apulasitiki ndi makina okonza mapaipi.
Ali ndi mizere yambiri ya 100 yopanga chitoliro .200 zida zopangira zoyenerera. Kupanga mphamvu kufika matani oposa 100 zikwi. Zake zazikulu zili ndi machitidwe 6 amadzi, gasi, dredging, migodi, ulimi wothirira ndi magetsi, mindandanda yopitilira 20 ndi zopitilira 7000.
Zogulitsazo zimagwirizana ndi ISO4427/4437,ASTMD3035,EN12201/1555,DIN8074,AS/NIS4130 muyezo,ndizovomerezeka ndi ISO9001-2015,CE,BV,SGS,WRAS.