Hangzhou Zhijiang Silicone Chemicals
杭州之江有机硅化工有限公司
Zhijiang, a Hangzhou silicone maker, sells separate PV materials for bonding frames, attaching junction boxes, potting, sealing glass edges and building-integrated panels. Start with the joint and the cure route you can run, then pick the grade made for it.
Supplier at a glance
- Location
- Hangzhou, Zhejiang
- Equipment listed here
- PV module bonding materials
- What Zhijiang makes
- Sealing and bonding materials, with a separate catalogue of PV applications. [2]
- Featured grade
- JS-606 PLUS, sold for PV frame bonding and junction-box attachment; potting uses other grades. [3]
- Profile sources
- 6 named sources; source list
Company scope
What the company makes
Hangzhou Zhijiang Silicone Chemicals (杭州之江有机硅化工有限公司) produces sealing and bonding materials. Its company page gives 1996 as the founding year and lists industrial and construction markets beyond solar. A dedicated PV solutions page says Zhijiang entered the photovoltaic industry in 2009 and sorts its solar materials by the job each one does. Each of those jobs calls for its own grade.
For module assembly, Zhijiang describes JS-606 and JS-606 PLUS as oxime-cure sealants for bonding frames and junction boxes. JS-606CHUN is the alcohol-release version of that job, and JS-606D is a two-component grade mixed 1:1. The same page names the JS-1184 potting family, ZJ-302PV hot-melt butyl for glass edges, and structural and weatherproof grades for BIPV.
The product page for JS-606 PLUS prints two columns for each property: a specification index and a typical value. Use the index for acceptance and treat the typical value as an example result. The lab conditions are 23±2°C, 50±5% relative humidity and seven days of cure, so set your own handling time on the line. The page lists aluminium, tempered glass, composite backsheet and PPO as substrates; run an adhesion trial on your actual coatings with your cleaning method. Zhijiang also quotes use from −40 to 180°C and mentions double-85 testing. Ask for test durations and joint details before you rely on those figures for module life.
The contact page puts headquarters in Xiaoshan and the factory in Qiantang, with separate desks for industrial, building, automotive and overseas customers. On the national standards portal, Zhijiang appears among the drafters of a revision plan for PV silicone sealants, which is at the consultation stage. That shows its role in the sector; for JS-606 PLUS, ask for the grade's own certificate. Buy on a written material and process agreement covering grade, joint design, surface preparation, cure and handling targets, traceable lots and change notice. Production capacity, approval for your module stack and permission to reuse Zhijiang's images are topics to raise with the company directly.
Equipment portfolio
Start with the actual equipment
The entries below cover selected products and series from this manufacturer. Ask for the full catalogue if your project needs other models.
JS-606 PLUS PV frame and box bonding sealant →
JS-606 PLUS is an oxime-cure silicone from Zhijiang, made to fix aluminium frames and junction boxes on solar modules. It tack-frees in 5–15 min (8 min typical), reaches tensile strength of at least 2.8 MPa and comes in white or black. Qualify… [3]
Specifications & selection questions →Six material families
Choose the grade by joint, cure route and process
| Material family | Job Zhijiang names | What sets it apart |
|---|---|---|
| JS-606 / JS-606 PLUS | Oxime-cure bonding and sealing of frames and junction boxes. | PLUS has its own table of index and typical values. |
| JS-606CHUN | Alcohol-release bonding and sealing of modules. | Needs its own data sheet; PLUS figures belong to PLUS. |
| JS-606D | Two-component module bonding mixed 1:1. | Mixing, dispensing and cure are qualified separately. |
| JS-1184 family | Potting for junction boxes and inverters. | Fills and protects the inside of a box, a different job from fixing it to the backsheet. |
| ZJ-302PV | Hot-melt butyl moisture barrier for glass edges. | Different material and application equipment. |
| JS-6000/8000 PV and JS-2000PV | Structural and weatherproof sealing for BIPV. | Building joints; module assembly needs its own grade approval. |
Use the table to find the right family, then request the current data package for that grade and qualify it on its own. [2]
Index versus typical
How to read the JS-606 PLUS data table
Two columns per property
Density carries an index of 1.47±0.03 g/cm³ against a typical 1.47. For tensile strength the pair is ≥2.8 MPa and 3.0 MPa; for shear between two aluminium pieces it is ≥2.0 MPa and 2.5 MPa. Quote both columns and the test method in your specification. [3]
Lab cure conditions
Every result assumes seven days of curing in a room held at 23±2°C and 50±5% RH. The four-hour and 24-hour cure-depth rows and the tack-free time describe the material in the lab. Find the release time for your own joint in a line trial. [3]
Heat and ageing wording
Zhijiang quotes service from −40 to 180°C and says double-85 and ageing tests were passed. Ask for test conditions, durations and results on a joint built like yours. [3]
Test on your own surfaces
Turn a catalogue sealant into an approved module joint
Describe the joint
Send frame, junction-box and backsheet drawings, coatings and lots, bead gap, surface finish and dispensing equipment. Ask Zhijiang to name the grade and the surface preparation it requires. [3][2]
Settle cleaning and compatibility
The product page names example cleaning solvents. Have Zhijiang and your equipment supplier approve a solvent that suits your backsheet, coating and plastic, and keep the current SDS on file. [3]
Trial dispensing and cure
Log grade and lot, bead size, room temperature and humidity, preparation and cure time. With your technical team, set targets for handling strength, full cure and adhesion. Line speed and wait times come out of this trial. [3]
Age the joint and release lots
Run agreed electrical, adhesion and environmental checks on your real module stack. Keep the results, and require notice before any change in formula, substrate, packaging or factory. [3][5]
Offices, plant and standards work
Standards drafting, factory location and certificates
Drafting a national standard
Zhijiang appears as a drafting company in national standard plan 20253706-T-606, which revises the PV silicone sealant standard and is open for consultation. The revised standard is still being drafted, and grade certificates are issued separately. [5]
Head office and factory
Headquarters is at 628 Xiaojin Road, Xiaoshan, and the factory at 1717 Xinshiji Avenue, Qiantang. Ask which site makes your grade and make sure shipping papers name it. [4]
Certificates and customers
The PV page says several products hold TUV or UL certificates and names customer companies. Ask for the current certificate annex that lists JS-606 PLUS, and for customer references if your approval process needs them. [2][3]
Getting the full data sheet
Zhijiang gates the PDF data sheet behind a member or contact form. The figures quoted here come from the product web page; ask Zhijiang to send the full TDS with your quotation. [3]
Project fit
Match the offering to your project
Material engineers approving a frame adhesive or box adhesive on their own substrates.
Buyers sorting one-part, two-part, potting and butyl needs into separate grade orders.
Engineers who want published lab conditions as the starting point for a supervised line trial.
Confirm before ordering
- The full TDS PDF, current SDS and the certificate annex for your exact grade.
- Adhesion on your substrates, full joint cure and module ageing results from your own trial.
- Which plant produces your grade and which Zhijiang entity signs the contract.
Drawn from Zhijiang's company, PV solutions, JS-606 PLUS and contact pages and the national standards portal entry; the gated TDS PDF is available from Zhijiang on request.
Certificates & approvals
Approvals on file
No factory audit or equipment certificate is on file for this manufacturer yet. Ask for current certificates, with their scope and validity, in your quotation request.
Prepare before contacting
Your JS-606 PLUS PV frame and box bonding sealant enquiry checklist
Tick the questions that apply to your project, then take them into your sourcing request. Ticking an item here does not contact the manufacturer.
Your selections remain on this page and are cleared on reload. Download or print to keep a copy. No checklist selections are uploaded.
Continue to sourcing requestBuyer questions
Can JS-606 PLUS be used to pot a junction box?
Zhijiang sells JS-606 PLUS for bonding and sealing frames and attaching boxes. For potting, its PV page points to the JS-1184 family. [3][2]
Does the 1:1 mix ratio apply to PLUS?
The 1:1 ratio is given for JS-606D. Follow the instructions on the PLUS sheet for PLUS. [2]
Should I accept deliveries against the typical values?
Write acceptance limits from the index column and agree the test methods. Zhijiang marks the typical values as reference results under stated lab conditions. [3]
Is JS-606 PLUS certified under the new national standard?
No. The standard revision Zhijiang helps draft is at the consultation stage. Ask for the grade's existing certificates and qualify the joint on your own modules. [5]
Sources
Where this information comes from
Zhijiang's PV sealant line is well documented online; ask for the PLUS data package, the producing plant and image rights before ordering.
Company facts come from the publications listed below, each with the date it was checked. The project-fit notes and enquiry checklist are our buying guidance.
- Company introduction ↗Manufacturer website · Checked Checked 2026-10-11
Founded 1996; sealing and bonding material maker.
- PV solutions page ↗Manufacturer website · Checked Checked 2026-10-11
Solar grades by cure chemistry and joint.
- JS-606 PLUS product page ↗Manufacturer website · Checked Checked 2026-10-11
Index and typical values, lab conditions, packs and storage.
- Contacts ↗Manufacturer website · Checked Checked 2026-10-11
Head office, factory and business desks.
- PV silicone sealant standard revision ↗National standards portal · Checked Checked 2026-10-11
Plan at consultation stage with Zhijiang among the drafters.
- JS-606 family product image ↗Manufacturer image · Checked Checked 2026-10-11
Shown on the PLUS page; the pack is labelled JS-606.
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