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The relationship between density, particle size and particle size distribution, compressive strength

Release time:2024-03-25

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The relationship between density, particle size and particle size distribution, compressive strength and other physical propertiesHollow Glass Microspheres (also known as Glass Bubbles) are micron-sized glass microspheres with a smooth surface and ap

Attending the 7th Global Cross-border E-commerce Conference

Release time:2023-05-11

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Holywell attend the 7th Global Cross-border E-commerce Conference from May 9 to May 11, 2023.

Holywell Glass Bubbles highly praised by the client

Release time:2022-04-23

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Our Glass Bubbles tested by our client, and highly praised of the quality by her.The following is the test report in detail.

The 2020 drilling Dept. cementing Technology Seminar of China Petroleum Society was held in Xi'an

Release time:2020-11-10

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The 2020 drilling Dept. cementing Technology Seminar of China Petroleum Society was held in the ancient city of Xi 'an On November 5, 2020.  Mr. Zeng was invited to give a speech on "the application of high-performance hollow glass micr

Holiday Notice

Release time:2020-01-14

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Dear Customers,The Chinese Spring Festival is coming, Holywell will have a holiday from Jan 20 to Feb. 03, 2020.Please call Johnkey (tel: +86-18638176371)  directly in case of urgency.Henan Holywell Co., Ltd.

Happy New Year 2020!

Release time:2019-12-26

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The New Year 2020 is coming!Holywell's team wish you and your loved families have a wonderful & Happy Holiday!Wishing you all the blessings  of peace, joy and happiness through the New Year 2020!

HGMs used in oil well drilling

Release time:2019-12-25

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Oil well cementing is the process of placing cement in the annulus between the casing and the formation. The major objective of primary cementing is to provide zonal isolation in the wellbore of oil, gas and water wells to prevent fluids such as wate