Xiangyun Group Technology Development Center was established in Wuhan. Xiangyun Group also plans to relocate the trade center and project declaration center to Wuhan, making full use of Wuhan's advantages and various resources to further strengthen and expand the company. Xiangyun Group set up a technology development center in Wuhan, aiming at attracting all kinds of technical talents through Wuhan's big window of the city, bringing together the technical power of all parties and continuously improving the technological development capabilities of the company. This move not only creates favorable conditions for enterprises to cooperate in production, teaching and research, but also facilitates “close contact†with chemical experts and professors, and solves the problems of enterprise technology development. Nuts are Tight junction parts of mechanical equipment. Nuts and bolts of the same specification can only be connected together through the inner thread. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (in nuts, M4 refers to the inner diameter of the nut is about 4mm, and 0.7 refers to the distance between two threads is 0.7mm); The same applies to American products, such as 1/4-20 nuts that can only be paired with 1/4-20 screws (1/4 refers to a nut with an inner diameter of approximately 0.25 inches, and 20 refers to 20 teeth per inch). Screw Nut,High-temperature Resistant Nut,Special Heavy Hex Nut,White Astm Heavy Hex Nut AM FASTENER , https://www.asmefastener.com