Is the second largest amount after the main lead salt stabilizer, thermal stability, though not lead salt, but both lubrication, metal soaps are generally not used alone, often between metallic soaps or lead salt and organic tin and use. In addition to cadmium (Cd), lead (Pb) are toxic outside, except for lead (Pb), calcium (Ca) and outside transparent, non-sulfide pollution, which is widely used in soft PVC, such as the non-toxic type, transparent type products.