Holtop certificate 3945105508525939223-blid-6622957597214205457

June 21, 2019

เลขดัง@baoboss,คู่โต๊ดบน,ฅนทำนา#1/7/62

Holtop products stand for TOP quality in heat recovery ventilation filed in China, certificated by CE, Eurovent, ISO and other different approved tests like anti-flaming test, anti-mold test, energy saving product test. Etc.

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Holtop certificate 3945105508525939223-blid-6622957597214205457

เลขดัง@baoboss,คู่โต๊ดบน,ฅนทำนา#1/7/62

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