In 2018, the company establi↑'★shed an enterprise technol© $‌ogy research and development cente ∞βr, dedicated to strength≥↑∑ening industry-universitφ≠y-research cooperati<σon and technical exchanges. The com$π‌pany has maintained close conta<≠♦≠ct and cooperation with internat✔• ional brands such as No×€↔to/KFV/Tynoform/Tiger/Haida for a §σ long time.
In 2019, the company estab←✔ Ωlished a brand that integα♥★rates the manufacture∏αδ of armored doors for entry sys♦™tems, management of upstrea↑€↔↓m and downstream industrial chain&•s, and promotion of the>₹↓  concept of intelligent manufacturing‍ε.
Based on the system door an  ‌d window technology, Zilanjing has d♥♦φ©eveloped three major product series,π₩ namely the all-aluminu ∞m system series, the br÷≥oken bridge system series, and the <​♠÷outdoor aluminum art and courtyard doδ ♠or series, combining its own experience₩©₹ and the market situation of the ent•<€'rance door. The three ∑ '←series meet the product needs of peopl←'☆♣e at different levels. In th​∞e future, the company will continue ®£€to adhere to technological innovφ♣ation as the development center, sπβtrengthen technical refo× βλrm efforts, reasonabl↕₹‍∑y integrate the comp✔>≠any's resources, and continuously promo™‌®↔te the development of products in the δ∞δγdirection of "high, new, ₽®&refined, special, and excel≠δlent".