(1) A small hole in electrical insulating tape caused by failure of the rubber coating to penetrate the fabric. The acceptable number of pinholes per unit area is subject to specification. (2) In paints, the presence of pimples or tiny holes in a coating.
Hangzhou ZeErRui Chemical Co., Ltd. Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square me.. Tianjin YR ChemSpec Technology Co.,Ltd. YR Chemspec?is a qualified manufacturer and supplier which audited and approved by SGS and ISO,we are strictly foll..