Ihe omuma a sitere na SOLAR HEAT REPORT WIDE World.Agbanyeghị na enwere naanị data 2020 sitere na mba 20 bụ isi, akụkọ ahụ gụnyere data 2019 nke mba 68 nwere ọtụtụ nkọwa.Ka ọ na-erule njedebe nke 2019, mba 10 kachasị na mkpokọta mkpokọta anyanwụ bụ China, Turkey, United States, Germany, Brazil, ...
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