In 2021, the Covid 19 is still raging everywhere abroad, but the domestic situation in China has been effectively controlled. China has increased investment in economic construction, and the construction of urban subway and elevated rail transit has accelerated, especially in the construction of deep foundation pits in large cities where new requirements are constantly being made in terms of construction depth. At the same time, the environmental protection requirements are getting higher and higher. It is required that the cleaned muck is directly loaded and transported away by vehicles without falling to the ground, so as to reduce the dustiness of transfer shipments. Adhering to the concept of creating value for customers, TYHEN has upgraded the design of TYSIM KM series telescopic boom, providing ultra-deep and large-capacity grab telescopic boom rental business, which can not only meet the requirements of construction depth, but also meet the efficiency of construction with environmental protection requirements.Under the leadership of Mr Xiang of TYSIM, the Director of R&D department, the bucket capacity is upgraded from 0.6 cubic meters to 1.5 cubic meters. the maximum lifting speed is increased to 60m/min, and the maximum working depth is 26m. The construction efficiency is doubled. The rod frame adopts the lightweight design concept to reduce the weight, and the material is upgraded to high-strength steel plate to increase the overall strength of the rod frame. In Nanchang subway construction of August, the upgraded version of KM220 shortened the excavation time of deep foundation pit earthwork, and won precious time for the overall subway construction. TYHEN Foundation has rich construction experience in deep foundation pit earthwork. The construction equipment adopts small rotary drilling rig to drill foundation pit maintenance piles, giving full play to the characteristics of light weight and small working space of drilling rig, and effectively reducing diesel fuel consumption while increasing the workload. With a larger bucket capacity, the efficiency of deep foundation pit excavation is greatly improved. At present, it has completed construction applications in many new fields, such as rooftop photovoltaic fishing light complementary project, Nanjing Grand Canal dam reinforcement project, Urban underground pipe gallery project of Hanzhong and Han Cultural Venues, and water construction of River landscape channel in Jiaxing, and accumulated a lot of construction experience. TYHEN will deeply cooperate with customers in the field of foundation construction, will customize appropriate equipment, will provide construction solutions, will improve construction efficiency, will provide different rental value-added services to create value for customers.Ms. Wei, Manager of TYSIM tools division took a photo with the provincial model worker and craft man Mr Sun. The telescopic boom series products have been tested in the fieldThe customized low headroom telescopic boom is being tested in the fieldKM220 telescopic boom in Kunming, Yunnan provinceKM260 telescopic boom assembly site in Lijiang, YunnanLow headroom KM220 construction site, Kowloon Bay, Hong KongKM150 in construction site of ABU Dhabi KM220 in Bauma Shanghai 2018 exhibition