久久操超级碰免费视频

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API System
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American Petroleum Institute standard API Spec is the oil industry-related products technical specification guidance system. As the API API specification developed by the Organization for its advanced nature, versatility, safety and the U.S. oil industry in the world's growing influence, API specifications have been widely adopted by countries in the world. The API is responsible for oil and gas industry equipment standardization to ensure that equipment used by industry safety, reliability and interchangeability.
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