故宫内的大缸，又称“门海”。按质量可分为铜鎏金吉祥缸、“烧古”青铜缸和铁铸大缸三类。一类为铜鎏金吉祥缸，是比较贵重的，在故宫内的太和殿门前，就陈列着这种鎏金大铜缸，每尊高1.2米，直径1.63米，缸的上部外表面均铭刻着“大清乾隆年造”的字款，大缸的两侧饰有兽面纹铺首环耳。第二类为“烧古”青铜缸，定做故宫铜大缸，全部为清代制造，其外表油墨锃亮，非常雅致，吉林铜大缸，在景运门和隆宗门前各有一对这样的大缸。第三类为明代制造的铁铸大缸，古朴素雅。

The big VAT in the Forbidden City is also called "Menhai". According to the quality, it can be divided into three types: Copper gilded auspicious cylinder, "burn ancient" Bronze Cylinder and iron casting large cylinder. The first type is copper gilded auspicious VAT, which is quite valuable. In front of the gate of Taihe palace in the Forbidden City, there is a large gilded bronze VAT, each with a height of 1.2 meters and a diameter of 1.63 meters. The upper surface of the VAT is engraved with the word "made in Qianlong period of the Qing Dynasty". The two sides of the vat are decorated with animal face patterns to pave the first ring ears. The second type is "burn ancient" bronze cylinder, which is made in the Qing Dynasty. Its appearance is very elegant and glossy. Jilin copper cylinder has a pair of such tanks in front of Jingyun gate and longzong gate. The third type is the large iron cylinder made in Ming Dynasty, which is simple and elegant.

唐县汇丰铜雕工艺品厂以诚信求发展，以质量求生存，以精湛的技术实力和雄厚的资金优势，先后为国内外各界用户制做了各种大中小型铜雕。追求卓越、开拓创新、“重合同”、“守信誉”、让客户百分百满意的经营理念。竭诚为国内外客户提供优质的服务，愿与新老客户携手共创美好未来

Tangxian Huifeng copper carving handicraft factory strives for development with integrity, survival with quality, exquisite technical strength and abundant capital advantages, and has successively made various large, medium and small copper sculptures for users from all walks of life at home and abroad. The business philosophy of pursuing excellence, developing innovation, "respecting contract", "keeping credit", and making customers 100% satisfied. Wholeheartedly provide high-quality services for customers at home and abroad, willing to work together with new and old customers to create a better future