35YEARS PROFESSIONAL FACTORY
ZIPPER INDUSTRY LEADER
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Elements of technology is part of the requirements of the standard, mainly by the classification and dimensions, requirements, test method, inspection rules and signs, packaging, transportation, storage, constructed using criteria. Only to classify the elements, for example, some necessary explanations:
No. 7 and the old standard 6 size is the same. This is a very standard cut, is through the market demand data, statistics and analysis, more from the specification of the distribution of scientific and economic considerations.
Model specification, specification refers to fold width of zipper teeth, enterprises in the manufacturing process or the formulation of standards when should consider to pull the head as a reference size is more reasonable.