Service chain upgrade: the door and window industry has entered the era of "three points of products, seven points of installation"
For a long time, there has been an unspoken rule in the door and window industry that is well known in the industry, but has also long caused consumers to suffer from it - "heavy product, light delivery". Many consumers have spent a lot of money to buy high-configuration system doors and windows, but after moving in and using them, they still frequently encounter problems such as water seepage on the windowsill, rubber strips falling off, air leakage in winter, abnormal noise or cards on the switch window. After in-depth anatomical analysis by industry experts and authoritative organizations, more than 80% of these quality problems are not due to the substandard quality of the product itself, but due to late on-site measurement, construction and installation irregularities. With the awakening of consumer rights awareness and the shift of industry competition from "price melee" to "value competition", the whole industry is reaching a strong consensus: doors and windows have entered the era of "three-point product, seven-point installation" high-standard delivery.
As a highly customized building material, doors and windows contain a long and error-prone service chain from the factory to the final use. This chain covers more than a dozen strict processes such as accurate measuring rulers in the early stage, basic inspection of holes, logistics damage prevention and transportation, high-altitude exterior wall hoisting, horizontal fine-tuning of window frames, expansion screws of fixed parts, waterproof mortar packing, styrofoam filling, weathering sealant application, and later product protection. Any chain loss at any stage will lead to the failure of the overall performance. In the past, door and window shop owners usually outsourced the installation work to temporary mobile casual workers. These workers lack systematic training and often work blindly based on experience. The length of the glue varies, the screws are cut, and the level is just a formality, thus burying countless water leaks and safety hazards. In order to completely break this delivery bottleneck and rebuild the reputation of the industry, major mainstream companies have begun to elevate "standardized installation and full-cycle delivery services" to the core highland of the brand strategy. The industry has gradually abandoned the outsourced casual labor model and vigorously promoted the "professional training and certified employment of installation craftsmen" system.
At the same time, a series of systematic and strict door and window installation process specifications have emerged. For example, before installation, a laser level must be used to check the level and verticality of the building opening in multiple points, and the error is controlled within the millimeter level; when fixing the window frame, it is strictly stipulated that the spacing between the expansion screws or fixing pieces cannot exceed a specific range to prevent the window frame from displacing when the strong wind blows. In the most core anti-leakage and sealing projects, standardized processes such as "gold delivery" are becoming the benchmark for the industry to follow. Workers must strictly use high-performance outdoor weather-resistant silicone sealants. The gluing process requires smooth lines, consistent width, fullness and no bubbles, and special glue scraping tools are introduced to ensure that the glue seams are beautiful and weather-resistant. For the installation of oversized glass in high-rise buildings, the company is equipped with professional mobile cranes and high-altitude suction cup equipment, and has formulated a detailed emergency plan for fall protection, which fundamentally prevents the occurrence of safety accidents. The service chain upgrade of the door and window industry is essentially the deep integration from the single "manufacturing" in the past to the advanced "manufacturing + modern service industry". Only by establishing a closed loop of services that can be quantified and accepted throughout the process, and truly "welding" high-quality products flawlessly on the walls of consumers, can the company win the real end point reputation.

