я думаю никто неувидит/почуствует разницы между 7000/7500
А в чем заключается велосипед? Как по мне так гораздо проще купить две бутылки силикона и мешать под любые нужды любой вязкости, чем иметь целую кучу бутылочек, по немысленным ценам.
немыслимые цены? мдаааа… лан доходы у всех разные и потребности тоже…
смешения масла для получения нормальной вязкости можно добится только в заводских условиях
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