Jianhu Hongji Glass specializes in the production and manufacture ofVarious sizes of borosilicate glass coversWe guarantee the quality of our products. The high-borosilicate glass products have excellent transparency and high transparency. Due to the manual production, normal craft traces, slight imperfections, and high-precision errors are all normal phenomena.High borosilicateGlass dome diameters from 5 cm to extra-large sizes up to 50 cm can be mass-produced and purchased. Customers can also custom-order based on their own designs and samples.Exclamation mark!

This product is labeled with the single glass shade size (additional accessories height about 2-3 cm).

We ship from our warehouse based on the default order information.Dear customers, if you need to replace the base, please note it down when placing your order! Changing the black or white paint base will cost an additional one yuan each.Please contact us to modify the price!

Diameter 9 cm cover available with base: except bamboo wood groove flat bottom

Diameter 10 cm cover available base: except bamboo wood groove flat bottom, oak wood flat bottom.

Diameter 12 cm cover available base options: except bamboo and wood trimmed flat bottom, oak wood flat bottom

We only produce and sell products made of high-borosilicate glass, ensuring the quality of our products. Our products have good transparency. Due to the manual production process, normal craftsmanship marks, slight imperfections, and high-precision errors are all normal phenomena. We can mass-produce products with a diameter of 20 cm and a height of 50 cm. Customers can also custom-make samples.

The coefficient of linear thermal expansion of G3.3 borosilicate glass is 3.3±0.1×10-6/K.Sodium Oxide"(Na2O)Boron oxide(B2O3)、二氧化siliconA type of glass with (SIO2) as its main component. The glass composition contains a relatively high amount of boron and silicon, with boron at 12.5~13.5% and silicon at 78~80%, hence this type of glass is known as high borosilicate glass. It belongs to the category of "Borosilicate glassThe PYREX glass is resistant to acid, alkali, and water, with good corrosion resistance. It has good thermal stability, high transparency, chemical stability, and electrical performance, making it resistant to chemical erosion, heat shock, and with good mechanical properties and able to withstand high temperatures.

Can be widely used forChemical Industryandspace exploration" 或 "spaceMilitary, FamilyHospitalIn various fields, it can be made intoLamps and LightingandDinnerware、标盘、望远镜片，洗衣机观察孔，微波炉盘，Solar water heaterA variety of products, with good promotion value and social benefits.