Ukrainaning HeidelbergCement Group sho'ba korxonasi bo'lgan Doncement tsement ishlab chiqaruvchisi Intensiv-Filter bilan aylanma pechni changdan tozalash bo'yicha qop filtri uchun shartnoma tuzdi.

https://www.intensiv-filter.com/fileadmin/user_upload/presse/files/20091208_ICR_Doncement1.pdf