Harbin Shouhua Trading Co., Ltd. Founded in 2004, is a company specializing in the R&D, production, and sales of electrical laminated wood products. With an initial investment of 35 million yuan, the company has achieved significant industry influence through over two decades of steady development. Headquartered in Harbin, it operates three modern factories covering a total area of 100, 000 square meters with a total floor space of 6, 000 square meters. Equipped with 106 sets of advanced production equipment, it has established a comprehensive manufacturing system.

Since its inception, Longsen has consistently adhered to the principle of "Quality First, Reputation Foremost, " pursuing continuous technological innovation and product enhancement. The company holds ISO 9001: 2008 Quality Management System, ISO 14000 Environmental Management System, and OHSMS 18000 Occupational Health and Safety Management System certifications, ensuring international standard compliance throughout all production and sales processes.

The company operates twelve advanced production lines for non-impregnated dense electrical laminated wood, achieving an annual production capacity of 10, 000 tons. Beyond scale, Shouhua prioritizes technological innovation to ensure sustained quality improvement. Its R&D team comprises 12 senior and 20 MID-level technical professionals, providing robust technical support. Integrating R&D, production, and sales, Longsen continuously introduces new products to meet market demands. Advanced testing equipment, including high-precision metal detectors sourced from Shanghai military suppliers, ensures rigorous inspection of raw materials and finished products to eliminate metallic impurities.

Shouhua's electrical laminated wood products are renowned for their practicality, cost-effectiveness, and technical superiority. Sourced from premium broadleaf timber in the Guangcai Ridge of Changbai Mountain (Northeast China), the products undergo meticulous processes including steaming, rotary cutting, drying, glue application, and high-temperature/high-pressure pressing. Key advantages include:

Moderate density & high mechanical strength

Excellent machinability

Superior compatibility with transformers

Dielectric loss factor similar to transformer oil

Rational insulation coordination

Long-term usability in 105° C transformer oil

These properties make it an ideal insulating and structural material for transformers, instrument transformers, and other electrical equipment. Custom thickness products are also available.

Shouhua products are sold globally, with exports reaching Japan, South Korea, India, Iraq, Vietnam, Bangladesh, and beyond. Domestically, they serve major transformer and instrument transformer manufacturers nationwide. Longsen maintains long-term partnerships with industry leaders including TBEA Shenyang Transformer Group Co., Ltd. And Baoding Tianwei Group Baobian Electric Co., Ltd. By the end of 2013, the company achieved annual sales exceeding 50 million yuan and captured over 50% of the domestic market share, earning widespread recognition for product excellence.