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BPDA (3,3',4,4'-biphenyltetracarboxylic dianhydride) is the raw material of polyimide resin, one of the super engineering plastics, and is used as an important component material for many products in the information and electronics field such as cell phones and copiers.
Heliotropine, also known as jasmine aldehyde, chemically known as 3,4-dioxymethylene benzaldehyde (3,4-methylenedioxy benzaldehyde), is widely used in synthetic fragrances, pharmaceuticals, food, daily chemicals, electroplating, etc.
You may have heard about API and Intermediates, but do you know the difference between them? We will show them in this blog.
Ranitidine is used to treat stomach and intestinal ulcers and to prevent them from coming back after they have healed. This drug is also used to treat certain stomach and throat (esophageal) problems. It works by reducing the amount of acid produced by the stomach.
The method of manufacturing aromatic polyimide by BPDA can be any one of the following methods: the method of manufacturing by polymerization of BPDA with aromatic diamine, the method of closed-loop imidation of polyamic acid obtained by polymerization of BPDA with aromatic diamine at a low temperature near room temperature.
Piperonal, also known as Piperaldehyde, is an organic compound commonly found in flavors and fragrances. The molecule is structurally related to other aromatic aldehydes such as benzaldehyde and vanillin.
According to the "Public Participation Measures for Environmental Impact Assessment" (Ministry Order No. 4) and the "Announcement on the Issuance of the Supporting Documents for the Public Participation Measures for Environmental Impacts EIA" (announcement No. 48 of 2018)
The original three management systems will expire on February 11, 2018. At the beginning of 2018, all departments of the company will seriously study the new standards.
On May 3, 2018, Hebei Haili Spice Co., Ltd. won the title of National Science and Technology SMEs and successfully entered the national-level SMEs directory!
On March 8, 2016, Hebei Haili Spice Co., Ltd. successfully listed in the National Small and Medium Enterprise Share Transfer System (referred to as “Share Transfer System” or “New Third Board”)
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Hebei Haili fragrances Co., Ltd. was established in December 2003, covering an area of 26700m², with a registered capital of 40.2 million, 281 employees and a sales volume of 198 million in 2019.
The company specializes in the development, production and sales of chemical APIs, spices, polyimide monomers.

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Jinsha Road, Shijiazhuang Economic and Technological Development Zone

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