Langfang Yan Yi Insulation Materials Co., Ltd., located between Beijing and Tianjin, is situated in Dacheng County, Langfang City, with convenient transportation; the company boasts comprehensive testing facilities and advanced production equipment.

The company specializes in waterproof and breathable membranes, vapor barriers, reflective membranes, UV-resistant waterproof breathable membranes, high-tensile vapor barriers, nine-grade anti-slip vapor barriers, TPO waterproof membranes, as well as rock wool boards, glass wool rolls, glass wool boards, extruded boards, and other insulation materials.

We operate with integrity at our core, adhering to the corporate philosophy of "Integrity as the Foundation, Reputation as the Supreme Principle." With unwavering dedication, we strive to create high-quality products and offer superior services to repay society.