HAINING LEADER SEAL CO.,LTD
HAINING LEADER SEAL CO., LTD is a China-based manufacturer located in Jiaxing that has developed a focus on window and door sealing products and fittings. The company traces its history back to 2011, when it started with a small production setup featuring five weaving machines and a modest daily output. By 2013, production capacity expanded to 20 weaving machines, achieving daily outputs exceeding 30 thousand meters, and signaling an upward trajectory in manufacturing capabilities. In 2015, the firm established long-term cooperation and technical partnerships with a European factory, underscoring a commitment to advanced materials and processes. The following year, the company continued to scale its operations, adding more than 60 additional machines and reaching a daily output of around 100 thousand meters. This growth reflects a sustained investment in production capacity to meet global demand.
The company operates a production base spanning over 4,900 square meters and employs more than 120 skilled professionals, including workers, technicians, and sales staff. This workforce supports a diverse range of products designed for windows, doors, and related fittings. Core offerings include pile weather stripping, foam seals, magnetic strips, and other fittings intended for windows and doors, as well as a variety of profiles under the pile weather strip family such as high supple, fin, and silicone styles. Foam seals and magnetic strips can be customized in style and shape, with size customization available to align with customer specifications and project needs.
Product applications extend across windows, doors, furniture, sliding doors, wooden doors, security doors, and industrial doors. The company emphasizes that its products are suitable for a broad set of applications and can be tailored to match particular shapes and sizes to meet customer requirements. The product portfolio also includes a range of related fittings to support overall window and door installations and performance.
HAINING LEADER SEAL CO., LTD maintains ISO 9000 and AAMA certifications, reflecting adherence to quality management systems and industry standards for building envelope components. Production is supported by more than 60 dedicated manufacturing lines, underscoring the scale of operations and the company’s capability to supply large volumes.
In terms of market reach, the company reports service to thousands of window and door factories worldwide, with goods sold internationally and domestically. The organization notes a daily production capacity of over 100 thousand meters and annual sales exceeding 30 million RMB, indicating a robust and steady supply chain able to support both large and small customer orders.
Customer service and technical support are integrated into the business model, with a defined pre-sale and post-sale service structure. Pre-sale activities include offering free samples, technical drawing checks, carton design, and loading calculations. During cooperation, the company provides follow-up on order production, ongoing quality checks during manufacturing, delivery time adjustments, and pre-loading quality verification. If needed, samples of finished goods can be sent to customers for evaluation. Post-sale services cover loading arrangements, document tracking, container arrival checks, after-sales follow-up, and issue resolution to ensure customer satisfaction and timely delivery. These service elements illustrate a comprehensive approach to customer engagement, quality assurance, and supply reliability.
Overall, HAINING LEADER SEAL CO., LTD presents itself as a factory-focused producer of window and door sealing solutions with a track record of steady expansion, an emphasis on customization, and a global service footprint. The combination of manufacturing scale, product versatility, and quality-oriented certifications positions the company to serve a wide range of customers in the building and construction sectors, both domestically in China and in international markets.
