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From 2003, HOPO experienced several steps of development in aspects of products, services, and brand image. <br><br>The initial development of the company was powered by the market demand for sliding windows and doors, while European companies had few solutions for it. Rollers for different grooves, various locking solutions for C groove leaf profiles, many flush locks and pull handles have been developed for sliding doors and windows. The smart design of the C groove locking system achieved several solutions, unlockable solution with square spindle handles or folk handles, lockable solution with cylinder for entrance door, pull handle for heavy door solutions, that covered all range of people′s demand for sliding windows and doors. From the cooperation with and services to fabricators, HOPO became the leading brand in this field. Patents have been registered for hundreds of products. <br><br>Based on introspection of traditional European products, HOPO has redeveloped some new solutions, tilt-turn windows for alu-wood profiles, with sliding stay functions, with fixed turning-width solutions; Lift-sliding door fittings with free-corner solutions; Casement windows and doors with K groove profiles. Optimized structure designs and materials utility make HOPO fittings with more fluent operating experience and prolonged life time. In these product ranges, the company′s strategy is to make the best windows and doors hardware in the world. These quality products brought very positive influence to the brand image of HOPO in the market. <br><br>Our dynamic technical team has not stopped at the stage of merely making good products, they wanted to something new. The innovative efforts leads to some revolutionary windows and doors system, the multi-functional casement windows, bi-folding doors, slide-sealing door...Some re-invent designs has solved problems that existed in t