Contact Us

Most additive projects do not start by browsing a catalogue; they start with a phone call. Tell us the substrate, processing temperature, part thickness, service years and climate, and our application technology team first works out where the part is likely to fail, then talks grades and loading. Sometimes we say the opposite of what a customer expects: this part should not have an additive at all, adding one will make it fail sooner. That is easier to say on a call than to hide in a document.

National service line

400-094-4362

One number handles both sales and technical questions, so you do not have to work out which kind you have first.

010-6760 4525 / 6768 3617Switchboard
010-8920 1649Sales
010-6769 7631Fax
tiangang@tiangang.comGeneral email

Find the right person by what you needHow to reach us

Inside the company people are organized by department; from outside you are organized by what you need. The five cases below reach different people — a wrong department costs you an extra round, so pick the one that matches:

Your situation	Which extension	What happens when you get through
Grade decided — you need a quotation and samples	Domestic sales280	We confirm grade, specification and annual volume, and what you get is a real price for that specification, not a catalogue.
No grade yet — you want to understand what fits	Market development220	We start with the five operating questions above, then recommend a grade. If the information is not enough we will not guess — we will tell you exactly what is missing.
Export, or you are outside China	Export sales260	Handled with export-version COA and packaging, with direct access to our Brussels office.
You want to supply us, provide equipment, or discuss commercial terms	Switchboard, ask for Procurement	Materials, equipment, packaging and logistics are open year-round. Incoming goods need an indicator report, changes must be notified in writing in advance, and batches must be traceable to the production date — the same three rules bind us.
You want to join Tiangang	Human Resources 010-8920 1649	hr@tiangang.com, open positions. Resumes go straight to R&D or application technology, with no external headhunter in between.

The five questions we ask on the callFive questions

This is not an interrogation. Without these five, any grade recommendation is a guess. Answer what you can; where you do not know, say so — that is better than inventing a number. We would rather ask another round than hand you advice that sounds right and is not.

Substrate grade

Which of PP / PE / PVC / ABS / PC / PA / PET / TPU, and roughly what grade and melt index

Processing temperature

Barrel zone set temperatures, especially peak melt temperature; whether there is a second processing step

Part thickness

Single layer or multilayer, and the actual wall thickness in millimetres. Thin-wall and thick-wall loadings are very different.

Service years

Indoor or outdoor, and for how many years. Whether any compliance document sets a required life.

Climate

Generic domestic conditions, or Middle East / high altitude / coastal salt spray / hot and humid. Whether it contacts sulfur or chlorine compounds.

Note: if the job is combining flame retardancy with weathering — the hardest category in the industry — tell us which flame retardant system the substrate uses. We treat flame retardant and light stabilizer as one problem and give a matched solution with like-for-like comparison data, rather than quoting two grades separately and leaving you to combine them.

AddressesLocations

Location	Address	What it is for
Beijing office	Room 2001-2002, Tower B, Jiaye Building, 6 South Third Ring Road East, Fengtai District, Beijing 100079	Sales, technical and commercial. Fax +86 10 6769 7631
Beijing site	Huangxu Road, Weishanzhuang Town, Daxing District, Beijing	R&D center and Beijing production base
Cangzhou site	National Lingang Economic and Technological Development Zone, Cangzhou, Hebei	Large-scale production base
Gu'an site	Industrial Function Zone, Gu'an County, Hebei	Production base
Registered address	North side of Huangwei Road, Weishanzhuang, Daxing District, Beijing — within the Beijing Tiangang Auxiliary Co., Ltd. premises	The business registration address. Contracts and invoices use this one, not Fengtai.
Hangzhou office	401, Haide Yunjie Xinchuang Space, Binjiang District, Hangzhou, Zhejiang	E-commerce operations; online channels and sample shipments go through here

Do not send to the wrong place: this is easy to mix up. The office is in Fengtai, the registered R&D and production address is in Daxing, Beijing, and the other two sites are in Hebei. Contracts, invoices and sample shipments are three different things; which process applies depends on your stage — say one line in an email and we will send you the right one.

Beijing Fengtai Jiaye Building — location of Tiangang's business office

Suppliers and commercial cooperationFor suppliers

All three sites work with external partners year-round on raw materials, packaging, equipment and logistics. Here are our rules up front, to save both sides time:

What must come with the goods

Indicator reports and batch retention samples for raw materials; packaging must meet product-contact requirements and the compliance rules of the destination country.

Changes to declare in advance

Any change in process, material source or origin must be notified in writing in advance. A batch change without notice breaks formulation traceability downstream, and we do not accept it.

On equipment

Purchase and maintenance of reactors, heat exchange, drying, automated packaging and warehousing equipment. Equipment selection criteria are the same across all three sites, not one standard per plant.

Call the switchboard and ask for Procurement, or write to tiangang@tiangang.com with the subject "Supplier cooperation". Attach company qualifications, product information and a capacity overview — that is what we review.

Joining TiangangCareers

R&D and application technology roles are open year-round, for backgrounds in polymer materials, chemical engineering, analytical testing or organic synthesis. The two lines are separate; your application goes directly to the relevant department, with no headhunter screening first.

Open positions

R&D engineer, application engineer, analytical testing, production process, sales and marketing — all open roles listed by city.

Go to careers page

Business scopeBusiness scope

Per business registration: technology development; technology promotion; sale of chemical products (excluding licensed chemical products).

What we actually supply is light stabilizers, UV absorbers, antioxidants, functional masterbatches and pharmaceutical and specialty chemical intermediates. For products see Products; for technical documentation see Corporate Brochure.

Online enquiryInquiry

A description is optional — leave a phone number and we will call you. But writing it out saves a full round, especially the five items above plus the grade and annual volume if already decided.

Technical reviewTiangang Technical CenterVersion2026-11-06

Specifications and application notes on this page are compiled from Tiangang's published technical data. Actual values are governed by the COA shipped with each lot and the technical agreement confirmed by both parties.

Certifications

National High-Tech Enterprise
Vice Chairman Unit, China Plastics Processing Industry Association (CPPIA)
Vice Chairman Unit, Agricultural Plastics Branch, China Agricultural Plastics Application Technology Society
Member, Ageing Methods Subcommittee, National Technical Committee on Plastics (SAC/TC15/CS5)
Member, Society of the Plastics Industry (SPI), USA

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