Patent for invention: a kind of flame retardant composite door panel
Patent for invention: a flocking soundproof door sticker and its preparation method
Patent for invention: a fire-resistant straw door panel and its preparation method
Patent for invention: a wood panel line molding device
Patent for invention: a fully automatic spraying machine with double-sided spraying function
Patent for invention: a soundproof door
Patent for invention: a sound insulation and heat preservation door panel and its preparation method
Patent for invention: A kind of structure of fire door fan
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