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Hangzhou Guosen Chemical Industry Co., Ltd. is a wholly-owned subsidiary of Singapore Guosen Enterprise Private Limited. Established in 1992, Hangzhou Guosen Chemical Industry Co., Ltd. specializes in the research, development, production, and sales of various adhesives for construction, industrial, and civilian use. The company's business scope includes: production and sales of precision chemical materials, resins, adhesives, and additives for industries such as electronics, textiles, and civil engineering, as well as the manufacturing and supporting services of color steel plates, insulation boards, and special resins for construction. It also processes nail clippers and related products. The company is located in the northern part of Hangzhou, covering an area of 23,333 square meters. It has an independent new product research and development department, advanced production equipment, and testing instruments, with strong technical capabilities.

The company is a member unit of the China Building Decoration Association.

The company's brands include "KS BOND," "Fangluo," "Suneng," "Oukai," "Longda," and "Xiushanwu." Products include: strong adhesives, white glue, nail glue, instant glue, polyurethane adhesive, coatings, DIY (instant adhesive) series products, and civil engineering epoxy resins, among others. Among them, the "Fangluo®" brand was awarded the city's famous trademark by the Municipal Administration for Industry and Commerce in 2001. The "KS BOND," "Fangluo," and "Longda" brands were recognized as Zhejiang Market Cross-Century Famous Brands by the Provincial Consumer Association and China Quality萬里行. The "Fangluo," "Longda," "Oukai," and "Xiushanwu" series products were rated as green building materials by the China Building Materials Market Association in 2003. All the above brands are registered trademarks of the company.