자주 묻는 질문

Common questions about sourcing, compliance and documentation across our product range.

C5/C9 석유수지와 C9 석유수지의 차이점은 무엇인가요??+

C5/C9 copolymer petroleum resins combine aliphatic and aromatic feedstocks and are selected for a balance of colour, compatibility, adhesion and softening point. C9 aromatic petroleum resins generally offer stronger aromatic compatibility and may have different colour and thermal characteristics. Performance varies significantly by grade, hydrogenation level and application, so supplier data and formulation trials should be compared.

SUNCHEM은 어떤 PA 등급을 공급합니까??+

SUNCHEM can source selected PA6 and PA66 grades for injection moulding, extrusion, fibre and other applications. Available viscosity, additive package, reinforcement, colour and packaging depend on the manufacturer and grade. Buyers should provide the processing method and target properties before grade selection.

귀사의 식품 첨가물은 EU 및 미국 시장 사용에 적합한가요??+

Suitability must be confirmed for the exact ingredient, grade, manufacturer, intended use and destination market. SUNCHEM can provide available specifications and supporting documents and can check whether a product is supplied against relevant EU, 미국 FDA, FEMA, FCC or other requirements. Final regulatory approval and permitted use level remain the responsibility of the finished-product manufacturer and importer.

What is Zinc Pyrithione used for?+

Zinc pyrithione is an antimicrobial ingredient used in certain industrial and formulated-product applications. Permitted uses vary significantly by country and product category, and some former cosmetic uses are restricted in certain markets. Buyers must confirm the intended application, local regulatory status and required grade before sourcing.

How long does delivery take for paint and pigment chemicals from China?+

Lead time depends on production availability, quality approval, 포장, dangerous-goods booking, destination and shipping method. SUNCHEM confirms an estimated production and transit schedule for each quotation rather than applying one standard delivery time to all products.

SUNCHEM은 중국에서 어떤 유기용매를 공급하나요??+

SUNCHEM supplies selected solvents and fine-chemical intermediates, including products used in coatings, 접착제, 청소, extraction and chemical synthesis. Because the current category includes both true solvents and specialty intermediates, buyers should search by product name or CAS number and confirm specification, hazard class and application requirements.

Are paint and pigment chemicals REACH or RoHS compliant?+

Compliance must be checked for the exact substance, manufacturer, tonnage band, use and destination market. SUNCHEM can request available REACH, RoHS or other regulatory documentation from the selected source, but no category-wide compliance statement should be assumed.

COA를 제공할 수 있나요?, SDS and TDS for paint and pigment chemicals?+

COA and SDS are generally available for suitable products, while TDS and additional analytical documents depend on the exact grade and manufacturer. Documentation should be confirmed before order placement, especially where impurity, colour strength, regulatory or application-specific data are critical.

수처리에 HEDP는 무엇을 위해 사용됩니까??+

HEDP is a phosphonate used as a scale and corrosion inhibitor in industrial water systems. It can help control deposits involving calcium salts and metal ions and is used in applications such as cooling-water treatment, boilers and certain cleaning formulations. Performance depends on water chemistry, pH, temperature and the complete treatment program.

Are your hair dye intermediates compliant with EU cosmetics requirements?+

Compliance depends on the exact substance, 불순물 프로필, permitted use, concentration and current destination-market rules. SUNCHEM can provide available specifications and analytical information for evaluation, but the formulator and responsible person must confirm that the finished cosmetic product meets applicable regulations.

SUNCHEM이 공급하는 수처리 약품은 무엇입니까??+

SUNCHEM can supply selected scale and corrosion inhibitors, 살생물제, 소독제, coagulants and other water-treatment chemicals, including phosphonates, isocyanurates and selected brominated or non-oxidizing biocides. Availability and permitted use depend on the exact product, application and destination-market regulations.

Are your amino acids food grade or pharmaceutical grade?+

Selected amino acids may be available in food, feed, nutraceutical or pharmaceutical grades. The applicable monograph, assay, microbiological limits, endotoxin requirements and supporting certificates depend on the exact product and manufacturer. Buyers should specify the intended use and required FCC, USP, EP, JP or other standard before quotation.

SUNCHEM은 어떤 종류의 페인트 및 안료 화학 물질을 공급합니까??+

SUNCHEM supplies selected dye and pigment intermediates, aromatic amines, 아미노페놀, resorcinol derivatives and other specialty chemicals used in coatings, 잉크, textile dyes and colourant manufacturing. Buyers should provide the exact product or CAS number because end-use suitability and regulatory requirements vary widely.

제약 중간체와 함께 제공되는 문서는 무엇입니까??+

Available documentation may include a specification, recent COA, SDS, TDS and selected analytical or impurity information for the exact product and manufacturer. Additional items such as residual-solvent data, elemental-impurity information, REACH status or regulatory support must be confirmed case by case according to the intermediate, manufacturing site and destination market.

어떤 카바페넴 항생제를 사용할 수 있나요??+

Carbapenem API availability must be confirmed individually because manufacturing authorization, sterile-processing requirements, patent or market restrictions and regulatory documentation vary by product and destination. Please provide the exact API, grade, quantity and target market for a source review.

Are your APIs sourced from GMP-certified manufacturers?+

GMP status must be verified for the exact API, manufacturing site and destination market. For suitable projects, SUNCHEM can screen manufacturers and provide available GMP certificates, regulatory documents and audit-related information subject to confidentiality and supplier approval. Buyers should complete their own regulatory and quality qualification before commercial use.

What antiretroviral APIs can SUNCHEM source?+

Availability of antiretroviral APIs depends on the product, manufacturing authorization, destination market, regulatory status and current supply conditions. Buyers should provide the INN, required pharmacopoeial standard, 수량, market and dossier requirements so that SUNCHEM can confirm whether an appropriate source is available.

자주 묻는 질문

칠월 9, 2026

책임감 있게 중국에서 통제 화학물질을 조달하는 방법

| 주제

"Controlled chemicals" is a broad term that can include precursor chemicals, certain solvents, and other substances subject to import, export or licensing requirements in one or more countries. Sourcing these materials responsibly starts with documentation and transparency — not with trying to move faster than the compliance process allows.

What "통제되는 화학물질" Can Mean

Depending on the product and the countries involved, a chemical may be controlled because of its potential use as a precursor, its hazard classification, dual-use concerns, or destination-specific import restrictions. The exact requirements depend on the product, the exporting and importing countries, and the intended end use — there is no single universal rulebook, which is exactly why documentation and clear communication matter so much.

Why End Use, Destination and Documentation Matter

Suppliers and, in some cases, authorities may ask for information about who the end user is, what the chemical will be used for, and where it is ultimately going. This is a normal part of legitimate trade in sensitive or controlled products, not an obstacle to work around. Buyers who can answer these questions clearly and consistently generally have a smoother sourcing process.

Common Documents Involved

  • End-use statement or end-user declaration
  • Import permit or license, where required by the destination country
  • 분석 증명서 (COA)
  • 안전보건자료 (SDS/MSDS)
  • 기술 데이터 시트 (TDS)
  • Commercial invoice and packing list

Not every document applies to every product or shipment — availability and requirements depend on the specific chemical, the supplier, the order stage and the destination country's regulations. Buyers should confirm requirements directly with their own compliance team, customs broker or legal advisor for their specific situation.

Supplier Screening and Compliance Communication

When evaluating a Chinese supplier for a controlled or sensitive chemical, it is reasonable to ask about:

  • Their experience exporting the specific product to your destination country
  • Their process for handling end-use statements or documentation requests
  • Whether they can provide the documents your import process requires
  • How they classify the product for shipping (위험 등급, UN number, packing group, if applicable)

A supplier who is vague, evasive or dismissive about documentation and end-use questions is a signal to slow down and look more closely, not a shortcut to a faster order.

Buyer Checklist for Responsible Sourcing

  • Confirm whether your target product is subject to any control, licensing or precursor classification in your country and in China
  • Prepare clear, accurate information about end use and end user before requesting a quotation
  • Ask suppliers directly what documentation they can provide, and at what stage of the order
  • Involve your own customs broker, compliance team or legal advisor for products you are unfamiliar with
  • Treat unusually low prices or suppliers unwilling to discuss documentation as a risk signal, not a bargain

How SUNCHEM Supports Responsible Sourcing

SUNCHEM does not offer ways to bypass import, export or documentation requirements. What we can help with is clarifying what documentation a specific supplier can typically provide, discussing product classification and packaging considerations, and helping buyers ask the right questions early — so that legitimate orders move forward with fewer surprises. Documentation availability always depends on the specific product, 공급자, 주문 단계 및 목적지 요구사항.

If you are sourcing a controlled or sensitive chemical, 썬켐에 문의하세요 with details about the product and your intended use, and we can help you understand what information and documentation the process is likely to involve.

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