Tianjin longlong metal ngwaahịa factory (dịrị gaba n'ime ebe kwuru na dị ka longlong) e tọrọ ntọala na 1991, ebe ọ bụ na oruru, Longlong e aku n'ichepụta na R & D maka vaious nke oyi ekwe ígwè profaịlụ, ewepụghị uniaxial nsuso mgbodo usoro, photovoltaic mgbodo, griin haus ígwè Ọdịdị na akụkụ, nakwa dị ka ngwá mmepụta maka ngwaahịa kwuru n'elu; All ngwaahịa nwere atụmatụ nke elu kpọmkwem, elu elu ọkọlọtọ, elu arụmọrụ ruru ka raara onwe ya nye ọkachamara ahụmahụ.
Tianjin longlong metal ngwaahịa factory nwere ike ụlọ ọrụ oru otu, ọtụtụ iri afọ nke ọkachamara n'ichepụta na nnyocha na mmepe nke dịghịzi oyi-ekwe ígwè profaịlụ, ewepụghị uniaxial nsuso support usoro, photovoltaic support, griin haus ígwè Ọdịdị na ndị ọzọ na ngwaahịa niile na ngwaahịa nwere elu kpọmkwem, elu ọkọlọtọ, elu arụmọrụ e ji mara.