为采购工程师和设计团队准备的选型与密封技术参考
Selection and sealing references for procurement engineers and design teams
从选型、测试标准到定制采购，以下指南围绕真实采购问题编写，每个回答先给结论，便于快速决策。
From selection and test standards to custom procurement, these guides answer real buying questions with direct conclusions for fast decisions.
四步确定防水等级、规格、材料与定制参数
Four steps to choose rating, size, material, and custom specs
密封强度三个层级的完整对比
A complete comparison of three sealing levels
干式潜水服密封要求最高的单点
The most demanding sealing point in a drysuit
从原料颗粒到 IPX8 成品的关键工艺
From TPU pellets to an IPX8 finished zipper
看懂拉链和装备上的防水等级代号
Understand waterproof rating codes on zippers and gear
解决“既要可开合、又不能漏气”的矛盾
Solving the openable-yet-airtight paradox
从五个维度评估制造商
Evaluate manufacturers across five dimensions
12 项必填参数 + 五步采购流程
12 required parameters + a 5-step procurement process