Lefatšeng la tlhōlisano la merafo, ho ba le lisebelisoa tse nepahetseng ke habohlokoa bakeng sa ho eketsa katleho le ho fokotsa nako ea ho theoha. Ho Sunward, re utloisisa karolo ea bohlokoa eo lisebelisoa tsa boleng bo holimo li e bapalang ho fihlela lipheo tsena. Ka ho khetheha ka mechini ea motlakase ea ho phunya majoe le mefuta e mengata ea lisebelisoa tsa merafo, re ikemiselitse ho fana ka litharollo tse kopaneng tse sebetsanang le karolo e 'ngoe le e 'ngoe ea tšebetso ea merafo, ho tloha ho cheka ho isa ho tsa ho tsamaisa. Ka theknoloji ea rona e tsoetseng pele le boenjiniere ba litsebi, re mona ho ts'ehetsa ts'ebetso ea hau le ho phahamisa sephetho sa projeke ea hau.
Sunward e na le nalane e ruileng e thehiloeng tlhahisong ea lisebelisoa, e tsepamisitse maikutlo ho hlahiseng lihlopha tse felletseng tsa meepo. Lihlahisoa tsa rona li etselitsoe ho sebetsana le mathata a thata ka ho fetisisa indastering ea merafo, ho netefatsa hore u ka sebetsa ka kholiseho le ka nepo. Har'a lihlahisoa tsa rona tse batloang haholo ke mechini ea rona ea motlakase ea ho phunya majoe, e fumaneng kananelo e kholo bakeng sa ts'ebetso ea eona le ho ts'epahala. Mechini ena e etselitsoe ho sebetsa hantle, e o lumellang ho cheka kapele le ka nepo, e leng se fetolelang tlhahiso e eketsehileng sebakeng sa marang-rang.
E 'ngoe ea lihlahisoa tse hlahelletseng lethathamong la rona ke mochini o chekang lejoe la motlakase oa SWDB200B. SWDB200B e tsebahala ka kaho ea eona e matla le likarolo tse tsoetseng pele, e ipabola lits'ebetsong tse fapaneng tsa merafo. Enjene ea eona e matla le matla a ho cheka a nepahetseng a netefatsa hore o khona ho sebetsana le mafika a thata habonolo. Ho feta moo, mohlala oa rona oa SWDB200A o fana ka bokhabane bo tšoanang, e leng khetho e ratoang bakeng sa litsebi tse ngata tsa merafo tse hlokang tharollo e tšepahalang ea ho cheka mesebetsing ea bona.
Ntle le mechini ea rona ea motlakase ea ho phunya majoe, Sunward e boetse e etsa mefuta e mengata ea lisebelisoa tse ling tsa bohlokoa tsa merafo. Literaka tsa rona tsa ho lahlela merafo, joalo ka SWK90 le SWK105Z, li etselitsoe ho mamella mathata a ho hula ka thata, ho netefatsa hore o khona ho tsamaisa thepa hantle. Ho sa le joalo, mefuta ea rona ea SWDE120B le SWDE165 e ntlafatsa linyehelo tsa rona, e fana ka litharollo tse fapaneng tse etselitsoeng litlhoko tse fapaneng tsa merafo. Mechini eohle ea rona e hahiloe ka boitlamo bo ts'oanang ba boleng bo thehileng Sunward joalo ka moetapele indastering.
Mokgwa wa rona wa bopulamadiboho o re thusitse ho fumana karolo e kgolo ya mmaraka, haholoholo sebakeng sa disebediswa tsa ho tjheka dibono, moo re motlotlo ho tshwara 70% ya mmaraka wa China. Katleho ena e totobatsa boitlamo ba rona ba ho fana ka lihlahisoa tse khotsofatsang ka linako tsohle le ho feta tebello ea bareki ba rona. Re lumela hore ka ho tsetela mecheng ea rona ea ho cheka majoe a motlakase le lisebelisoa tse ling, o ka ntlafatsa haholo tlhahiso ea hau le phaello lekaleng la merafo.
Ha re ntse re tsoela pele ho qapa le ho atolosa lihlahisoa tsa rona, Sunward e lula e tsepamisitse maikutlo ho thuseng bareki ba rona ho finyella lipakane tsa bona tsa merafo. Hore na o hloka mechini e chekang mafika a motlakase, literaka tsa ho lahla, kapa lisebelisoa tse ling tsa merafo, re mona ho u fa litharollo tse lumellanang hantle le litlhoko tsa hau tsa ts'ebetso. Ikopanye le rona kajeno ho hlahloba hore na litharollo tsa rona tse tsoetseng pele tsa merafo li ka fetola merero ea hau joang le ho phahamisetsa ts'ebetso ea hau boemong bo latelang. Mmoho, re ka bopa bokamoso ba merafo ka lisebelisoa tse tšepahalang le tse sebetsang hantle tse etselitsoeng katleho.
