The materials used to produce this string are all of high quality and non toxic. We do not use any regenerated products. Each article is differentiated by their strength, breaking capacity, lengthening, hardening temperature, specific weight and metric expansion. Technical and safety information concerning the various differences between the raw materials used, are available for use. This type of plastic string is recommended for the fastening of trees, flowers and vines. The elasticity of the product does not damage the plants while facilitating their growth.