Zhejiang Longyou GD Chemical Industry Co., Ltd is a high-tech private corporation, it is special in research, production, application and sales of environment-friendly and halogen-free Nitrogen-Phosphorus series flame retardants. Our chief products are as following: GD-APP101 Crystalline II ammonium polyphosphate(APP) with high polymerization degree, GD-APP102 Melamine cladding ammonium polyphosphate , GD-APP103 Epoxy resin cladding ammonium polyphosphate, GD-APP104 Non-Halogen intumescent Flame Retardant For Polyolefines.


APP has three advantages:
Firstly, environmental friendly: this flame retardant is Nitrogen-Phosphorus system, has lower smoke density, uncorossive when firing, can reach the international standard.

Secondly, high efficient in flame retardant: good thermal stability, permanent flame retardant effect, low water-solubility; products using APP has low water-solubility, good uvioresistant properties, hard to change yellow, can reach UV 94 V-0 with lower addition.

Thirdly, lower cost: It’s flame retardant mechanism is gas phase and liquid phase synergistic effect, can reach UV 94 V-0 with lower addition and lower the cost comparing to Bromine series flame retardants.


Our company insists on the service attitude of scheming for customers, has a professional marketing team. Our products have first class quality in the world (especially GD-APP101,this product equivalent to Clariant GmbH’s Exolit AP 422 and 423) and competitive prices in the market, which qualifies the needs of customers at home and abroad. Our products have been sold to Europe, North American and South-east Asia countries. We also has established good business relation with many producer of different provinces in china.


“Quality, Prestige and Service” is the foundation and guarantee of realizing the innovation and great-leap-forward development of our company. The more concern to us, the more repayment and value to you.


Registration date: Mar 9, 2006