Langfang Bonai Environmental Protection Technology Co., Ltd.
Kampaniyo unakhazikitsidwa mu July 2005, chaka chomwecho mu August 3 galasi CHIKWANGWANI analimbitsa pulasitiki kupanga mzere unsembe uli wangwiro, mu February 2008 kukhazikitsa PVC kupanga utomoni kupanga matailosi mzere 2, 3 March 2009 unsembe wa mizere kupanga polycarbonate, unsembe wa CHIKWANGWANI galasi mzere wopanga thanki yamadzi apulasitiki 1 mu Julayi 2013, Disembala 2013, kukhazikitsa magalasi olimbitsira makina opangira pulasitiki mzere 2, 2016 pu chikhalidwe chamiyala yopanga mzere 1, 2017, mizere 6 yopangira kukhazikitsidwa kwa nsalu yotchinga ya PVC, yoyikidwa mu 2017 kuyambira ndodo mtundu 1 mizere yopanga pansi.
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Wapachaka linanena bungwe Mtengo
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