Olovli yog’och eshikning (shu jumladan kontrplak) suv tarkibini nazorat qilish juda muhim, u eshikni tegishli bo’shliqni, normal ishlashini va yorilib ketmasligini ta’minlashi mumkin, shu bilan birga yog’ochni olovga chidamli davolashdan keyin qo’yish kerak. foydalanilsin.

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