Two claw valve wrench material is divided into: high quality chrome tool steel Two-jaw valve wrench features: non-slip, anti-fall, no fold, durable, easy to use; Two-jaw valve wrench is suitable for power generation, petroleum, petrochemical, military, shipbuilding, metallurgy, chemical, machinery, processing and other industries. It is an essential tool for equipment installation, commissioning, maintenance and repair work. The valve wrench is divided into two structures: two-jaw valve wrench, three-jaw valve wrench, six-jaw valve hand, F wrench, F-type valve wrench, non-slip chrome F wrench, flower head wrench, Y wrench, Y-type valve wrench, K wrench, K-type valve wrench, stainless steel valve wrench, stainless steel wrench, stainless steel F wrench, stainless steel valve wrench, etc.; Indigo Blue is dark blue even grains vat dye,insolves in hot anilin,but not in water.It turns yellow green when meeting the oil of vitriol.It is yellow in alkaline rongalite revert liquid and white in acidic liquid.Have good flowability, which is beneficial to the automatic measuring and operation; good wettability and dispersibility, don't agglomerate or aggregate in use, and is convenient for preparing dye liquor; good storage stability, and don't absorb moisture easily, and has not electrostatic adsorption phenomenon.Widely used in dyeing cotton fabrics and Jeans and making up indigo bromide or made into organic pigment ,moreover, be used to make 5.5-7.7-tetraroma indigo, biochemical medicament and indicator. Indigo Blue,Indigo Vat Blue Dye,Indigo Blue For Textile,Indigo Blue for Denim Yucheng Jinhe Industrial Co.,Ltd , https://www.hntitaniumdioxide.com