... coefficient:3.3, eco-friendly-------the same material used to make scientific lab equipmentCraft: handblown, exquisite&elegant Advanced equipment ... flavor. Widely used in individual ,office, home, decoration, coffee shop, hotel, tea house,senior restaurant ,bar, KTV ... with care.Detail picturesProduction process & inspection & packing Welcome to your kind inquiry , dear friend! HOT! Handblown lampworking ...