Bonnie Chemical (Tianjin) Co., Ltd. was established in 2005 and has a strong research team. It has hired several well-known domestic experts as technical consultants. Drawing on advanced technologies from Europe and America; With renowned experts in chemistry and casting, as well as high-level R&D professionals; Relying on experienced production technicians and a high-quality team of employees; Adhering to the principles of market orientation, technological innovation, and customer needs; Following the principle of sustainable development, research and develop environmentally friendly modified phenolic resins. Based on the design concept of meeting environmental protection and clean production requirements, as well as improving the quality of castings, we have independently innovated and developed a new type of Bonnie resin on the basis of resol phenolic resin and alkaline phenolic resin. The resin does not contain formaldehyde or phenol. In terms of its molecular structure, it is a high molecular weight "Modified Resole Phenolic Resin".

Bonnie resin has been successfully applied in the production of various types of castings, such as coal mining machinery, mining machinery, marine parts, engineering machinery, and railway locomotive castings, with weights ranging from 30kg to 160T. The quality of castings has been recognized by peers in the domestic and foreign industries, especially the surface quality of castings has reached international standards. The long-term practice of the manufacturer has shown that the comprehensive cost of casting has been significantly reduced, and the production environment has been significantly improved.

Bonnie resin has also been applied in the production of cast iron parts. It is worth mentioning that for ductile iron parts with high quality requirements, the problem of surface sulfurization of ductile iron has been well solved