Abstract: A strap with a failure indicator and a safety device including the strap. The strap comprises: a main body structure formed by knitting; and one or more second yarns integrated straight into the main body structure in the length direction of the main body structure along the entire length of the main body structure and at least partially fixed to the main body structure, wherein the main body structure and the second yarn are selected such that the main body structure and the second yarn are elongated and do not break under a predetermined amount of a tensile force, and after the tensile force is released, the main body structure retracts, such that at least one second yarn at least partially protrudes from a plane of the main body structure to form a failure indicating loop. The safety device comprises a component formed by the strap with a failure indicator.

Abstract: The invention discloses an environment-friendly leuco dye vegetable oil solvent, prepared from the following components by mass percent: 10-40% of component A, 40-750% of component B and 10-20% of methyl chloride, and the sum of the mass percentage of the above components being 100%. The component A is vegetable oil or vegetable oil methyl ester, and the component B is epoxy vegetable oil or epoxy methyl ester.

Abstract: The invention discloses an environment-friendly leuco dye vegetable oil solvent, prepared from the following components by mass percent: 10-40% of component A, 40-750% of component B and 10-20% of methyl chloride, and the sum of the mass percentage of the above components being 100%. The component A is vegetable oil or vegetable oil methyl ester, and the component B is epoxy vegetable oil or epoxy methyl ester.