Clothes are made by sewing machines. Generally, machines used in regular factories use white oil, which is the kind of thin sewing machine oil. The so-called white oil usually refers to white mineral oil. It is a mineral oil that has undergone special deep refining. White oil is colorless and odorless, chemically inert and has good light stability. Its basic composition is saturated hydrocarbon structure, and substances such as aromatic hydrocarbon, nitrogen, oxygen and sulfur are close to zero. Because of this ultra-refining depth, it is difficult to carry out heavy fractions in the actual manufacturing process, so the molecular weight of white oil is usually in the range of 250-450. It has good oxidation stability, chemical stability and light stability, is colorless and tasteless, and does not corrode fiber textiles.

The key point is that this oil is colorless and odorless, and clothes can only be slightly exposed to oil in this formal way. If you smell it, it is very likely that this dress was made by a small workshop or a factory that failed the quality inspection. Using unqualified engine oil, the oil used is uncertain, and it is impossible to determine whether it is harmful to human body. In addition, clothes are also used for other purposes, which is even more unknown. It is recommended to negotiate with the merchant to return the goods.

In addition, online shopping clothing, it is best to choose a more reliable brand, after receiving the goods must be inspected before signing the bill.