Alpha-lipoic acid, also known as thioctic acid, is a colorless to pale yellow crystalline powder that is virtually tasteless. It has poor water solubility, with a solubility of only about 1 g/L at 20°C, but it is soluble in aliphatic solvents and 10% NaO
A popular type of hinge for a PVC gate is a self-closing hinge. These hinges are typically made of stainless steel and have a spring mechanism that automatically closes the gate after it is opened. Other options may include simple gate hinges with a clamp
Advantages of crossed roller bearing with mounting holes:*Easy installation,accuracy would not be affected;*No need flange or bearing housing;*For both inner and outer rings accuracy rotation;*High stablity,widely used in precision equipments.