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OEM/ODM Service

We pride ourselves on being an innovator and a leader in the herbal supplements industry. The advantages we offer our OEM partners include direct sourcing of top-quality herbs, intensive species verification, comprehensive contaminant testing, stage-by-stage quality assurance and multiple format options for maximum convenience.

RainWood OEM services focus on building your brand and providing you with absolute peace of mind that you and your clients are receiving the best herbal products available.

RainWood will produce your formulas to your specifications, so that you can sell products you trust or treat your patients the way you believe is best. You will be able to prescribe these herbal formulations with complete confidence, thanks to our extensive quality-assurance practices, which include compliance with the strictest ISO certifications worldwide. Please find more details about working with RainWood as your OEM partner below and contact us today to get started.

Choosing the Best Herbal Products for Your TCM Business

RainWood offers a comprehensive selection of TCM single and formula herbal products in a variety of formats. Our three most popular formats are granules, capsules and tablets.

1. Gummy
Gummy candies are a type of chewy candy made with gelatin, sugar, and flavorings. They come in a variety of shapes, sizes, and flavors, and are popular among both children and adults. Some popular types of gummy candies include gummy bears, gummy worms, and gummy rings.

2. Soft Capsules
Soft capsules are a type of oral dosage form used to deliver medication or supplements. They are made of a gelatin shell that contains a liquid or semi-solid inner fill. Soft capsules are typically easier to swallow than hard capsules or tablets, making them a popular choice for people who have difficulty swallowing pills. They are commonly used for delivering oils, vitamins, and other liquid-based medications.

3. Instant Powder
All kinds of super green, super fruit powder, super probiotics and other powder, all kinds of formula match everything.4oz,8oz and so on.

4. Tablets
Tablets are granules that have been pressed into small, easily swallowed servings. This format offers the convenience of capsules without the outer coating, making it easier for some individuals to digest. Tablets are created using our most advanced manufacturing technique.

RainWood Gives You Everything You Need To Satisfy Your Business Requirements and Customers

RainWood creates our OEM products with the same attention to quality and safety that we pay to our own products. We meticulously execute on every aspect of herb and formula production because each step is critical to the final products that our customers will use. RainWood begins by maintaining personal relationships with all of our herb growers and uses state-of-the-art lab equipment and practices to verify the identity of raw herbs before producing our products. Verifiable quality assurance at every subsequent stage further ensures that buyers can use all of our products with complete confidence.

While we do offer our customers the option of ordering bulk granules, we strongly recommend that you use our reliable bottling services to package your granules for you. You will want to ensure that your bottling provider meets the same national and international standards that your herb provider does, including TGA PIC/S GMP and NSF cGMP certificates. This aspect of delivery is as crucial to your customer’s well-being and reputation as are the herbs you offer. When you choose to have RainWood bottle your herbs, you can enjoy maximum convenience, simplifying your buying process.

If you choose RainWood as your OEM partner, the only aspect your business will be responsible for is creating a label design that accurately reflects your brand. You know your company and customers best, so this step — coupled with RainWood’s tested and qualified products — gives your company the greatest advantage. Customers should note, however, that the labels they create should comply with all FDA regulations, and we strongly encourage you to work with your legal counsel to avoid any inadvertent issues.

Manufacturing Process

As experts in the development of Chinese herbal products, our pursuit of excellence is seen in every aspect of our manufacturing process, whether it’s for our own products or our OEM orders. Production of herbal products takes place in three major steps: extraction, concentration and granulation.

After the raw materials are prepared and authenticated, their active ingredients are extracted and concentrated at low temperatures. The extraction temperature and timing are strictly controlled to maximize the efficiency and thoroughness of this step. Then, to increase the efficacy of the finished product, our patented essential oil restoration technology seals in the essence of the herbs.

In the concentration stage, the liquid extracts are gradually evaporated using low temperatures to produce a more condensed form of the herb. The duration of this stage is carefully calibrated to achieve the best herb-to-solute ratio for each unique herb or formula.

The concentrate, now in the form of a viscous paste, moves on to the granulation phase. The paste is sprayed onto minute particles of a base material (non-GMO potato starch and/or ground herbs, depending on the formulation) and the moisture slowly dissipates. At the end of the granulation process, we have a fine, free-flowing extract granule that can be packaged as-is or further processed into one of our many other formats.

Complex testing procedures are implemented throughout production to ensure the products meet our quality and safety standards at every stage of the process.

RainWood’s herbs pass tests for the full range of today’s contaminants. Tests include analysis for heavy metals, dangerous pesticides, sulfur dioxide, aflatoxins.

A Certificate of Analysis (COA) is produced with each batch of herbs. The COA documents the excellent quality of their herbal extracts.

Species Authentication

Authentication is the determination of the correct species, origin and quality of Chinese herbs. RainWood’s authentication process aims to prevent the use of inauthentic herbs, whether by mistaken identification or the substitution of imitation products.
RainWood’s authentication method is modeled not only after the foundation books of TCM, but also in accordance with each country’s particular standards for quality and inspection methods. The authentication method also uses technology specified for detection of the correct origin and species of the Chinese herbs.
RainWood performs the following methods of authentication on raw herbs:
2.Microscopic analysis
3.Physical/chemical identification
4.Chemical Fingerprinting
RainWood applies the techniques of Thin-layer chromatography (TLC), High-performance liquid chromatography-mass spectrometry (HPLC-MS), and Gas chromatography-mass spectrometry/mass spectrometry (GC-MS/MS) to authenticate the species identity of herbs.

Sulfur Dioxide Detection

RainWood takes actions to prevent sulfur fumigation from being applied to its raw herbs. RainWood takes many precautions to keep sulfur fumigation from its herbs, because it can jeopardize the quality and safety of the herbal products.
RainWood’s quality control teams analyze herbs for sulfur dioxide. RainWood employs the following methods: aerated-oxidization, iodine titration, atomic absorption spectroscopy and direct color comparison. RainWood uses the Rankine method for sulfur dioxide residue analysis. In this method, the herbal sample is reacted with acid and then distilled. The sulfur dioxide is absorbed into the oxidized Hydrogen Peroxide (H2O2). The resultant sulfuric base is titrated with a standard base. The resulting colors determine the sulfur content: olive green indicates no oxidized sulfur residue while a purplish-red color indicates a presence of oxidized sulfuric acid.

Pesticide Residuals Detection

Chemical pesticides are generally classified into organochlorine, organophosphate, carbamate and pyrethin. Of these, organochlorine pesticides have the longest history of use, are most potent in effectiveness, and are also the most harmful to human health. Although many organochlorine pesticides are already forbidden by law, their persistent nature resists being broken down and can remain in the environment long after use. RainWood takes a comprehensive approach to testing for pesticides.
RainWood’s labs test not just for the chemical compounds in the pesticide itself, but also test for the by-product chemical compounds. Pesticide analysis must anticipate all potentially harmful chemical changes produced in the plant to be truly effective. The techniques generally employed to detect pesticide residuals are thin-layer chromatography (TLC) or gas chromatography. TLC is used in most general cases because it is simple and easy to execute. Yet KP insists on using gas chromatography because of its high sensitivity, precision, and more reliable results.

Aflatoxin Detection

Aspergillus flavus is a fungus that occurs in pesticides, soil, corn, peanuts, hay and animal organs. Aspergillus flavus has also been found in Chinese herbs such as corydalis (yan hu suo), cyperus (xiang fu) and jujube (da zao). It thrives especially in warm temperatures of 77–86°F, a relative humidity above 75% and a pH level above 5.6. The fungus can actually grow in temperatures as low as 54° but will not be toxic.
RainWood enforces strict international regulation standards. Aflatoxin testing is performed on all herbs at risk of contamination. RainWood values high-quality premium herbs, and herbs that contain unacceptable Aflatoxin levels are discarded. These strict standards keep herbs safe and efficacious for consumers.

Heavy Metal Detection

Herbs have been used medicinally in China for thousands of years. Hundreds of years ago, herbs grew in nature organically, without any risk of contamination by pesticides or other pollutants. With the industrialization of agriculture and expansion of the chemical industry, the situation has changed. Industrial waste and pesticides can add dangerous chemicals to herbs. Even indirect waste – such as acid rain and contaminated groundwater – can dangerously alter herbs. Along with industry’s growth, the danger of heavy metals in herbs has become an acute concern.
Heavy metals refer to metallic chemical elements that have a high density and are highly toxic. RainWood takes precautions to audit its suppliers’ products to ward against heavy metals. Once herbs reach RainWood, they are analyzed as raw herbs and analyzed again post-processing in the form of granules.
RainWood uses inductively coupled plasma mass spectrometry (ICP-MS) to detect for the five heavy metals that pose the most serious risk toward human health: lead, copper, cadmium, arsenic and mercury. In excessive quantities each of these heavy metals endangers health in different ways.

After-sale Service

RainWood has set itself the aim of creating a good and firm image with its Customers, in compliance with the applicable rules and laws, intervening with professionalism on any problems that may arise after delivery.

The Quality Policy, which hinges on the aforementioned contents, is implemented, disseminated and supported through:

01. the systematic application of the Quality Management System;

02. the involvement of all staff, who are informed of the objectives to be achieved and properly trained and trained to operate;

03. the use of qualified suppliers and materials;

04. the documentation of all errors found within the company and customer complaints, their analysis and resolution (treatment);

05. systematic monitoring of customer needs and the degree of their satisfaction;

06. the introduction of preventive and corrective actions necessary to guarantee respectively that the causes of the problems are prevented or definitively removed.

RainWood Furthermore, it is continuously engaged in business processes in order to guarantee both respect in terms of prevention and containment of environmental impacts and consumption of resources, as well as promoting a greater environmental sensitivity.

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