I-Nisen yinkampani ebandakanyeka kwi-R & D, ukuvelisa, ukuthengisa i-upvc kunye ne-aluminium yokwenza umatshini wewindows, ukukhusela umgca wemveliso yeglasi kunye neefestile zomnyango weefestile njl.
"Ukunikezela umthengi ngomgangatho, ukuqhubela phambili noluntu, ukukhula kunye nabathengi, ukomeleza kunye neqela" Ngaba sisiseko esiphumeza ulawulo lweShandong Nisen Trade Co., Ltd. kuzo zonke iinkalo.