Inflatable sealing ring, also known as airbag, is hollow inside and has one or more inflation (deflation) nozzles. Inflatable sealing ring is a common product type. Generally speaking, the types of inflatable sealing rings are classified according to their specifications and cross-sectional shapes. From the cross-sectional shape, there are many types of inflatable sealing rings, such as round, rectangular, square, trapezoidal, D-shaped, C-shaped, V-shaped and M-shaped.

DuPont is a famous French brand founded by SimonTissot-Dupont in 1872. S.T.Dupont The famous French brand s.t.dupont was acquired by Hong Kong Dixintong Group. As early as 1930, French DuPont products have become the favorite of prominent people all over the world, including royal aristocrats and industrial and commercial tycoons in European countries. 1947, DuPont made a set of travel handbags specially for the wedding of Queen Elizabeth and Duke of Edinburgh. Business is all over the world. With the development of the market, S.T.Dupont gradually expanded its luxury goods series, and successively introduced men's clothing and accessories, leather goods, lighters, writing tools, men's shoes, watches, cigar accessories, glasses, perfume and so on. From 65438 to 0872, DuPont produced various leather workshops. At the beginning of the 20th century, DuPont began to manufacture lighters with the trademark S.T.Dupont. Today, DuPont is a symbol of wealth and taste. For example, some styles of lighters of DuPont use 24K gold or 925 silver as the shell, and the decoration means are various patterns processed by machines, inlaid with pure gold patterns. Du Peng is better at mixing Chinese paint with "Jinsha". Among DuPont lighters of the same style, the lighter with large paint is even more expensive than the gold-plated one.