Service
Shipping Logistics
Warehouse Services
Expo Services
About Us
Help Center
Supplier
Supplier Service
Supplier Center
Supplier Register
Investment Promotion
Get the App
FAQ
Contact Us
English
English
Русский язык
简体中文
Products
Products
Suppliers
Post My RFQ
Sign In
/
Join
Shopping Cart
Mall
Titanium Industry Chain
Titanium Dioxide
Rutile Grade Titanium Dioxide
Anatase Grade Titanium Dioxide
Titanium Ore
Ilmenite Sand
Titanium Sponge
Ilmenite
Rutile
High Titanium Slag
Titanium Material
Titanium Metal
Titanium Tetrachloride
Titanium Tetrachloride
Zirconium Ore
Zircon Sand
Zircon Sponge
Paints & Inks Industry Chain
Pigments
Carbon Black Pigments
Organic & Inorganic Pigments
Pthalocyanine Pigments
Azo Pigments
High Performance Pigments
Iron Oxide Pigments
Dyes
Acid Dyes
Basic Dyes
Reactive Dyes
Dye Intermediates
Direct Dyes
Vat Dyes
Inks
Inner Printing Inks
Surface Printing Inks
Offset Printing Inks
Screen Printing Inks
Inkjet
Waterproofing Material
Adhesives
Emulsions
VAE Emulsion
Acrylic Emulsion
Elastic Emulsion
Primer Emulsion
Auxiliaries
Defoamer
Drier
Curing Agent
Leveling Agent
Dispersant
Wetting Agent
Thickener
Multi-functional agent
Cellulose
Coating
Resin Industry Chain
PVC Resin
PVC Resin Paste
PVC Resin Suspension
PP Resin
PP Homo
PP Block
PP Random Copo
PE Resin
HDPE
LDPE
LLDPE
PS Resin
Caustic Soda
PVC Additives
Heat Stabilizer
Plasticizer
Flame Retardant
Foam Agent
Lubricant
Impact Modifier
Pigment
Light Stabilizer
Antioxidant
Processing Acids
Filling Agent
Polymers
Polyvinyl chloride PVC
ABS Resin
Polyethylene terephthalate PET
Polyethylene PE
Polypropylene PP
Purified Terephthalic Acid PTA
Chlorinated Polypropylene CPP
Polycarbon Resin PC
Polystyrene PS
Powders Industry Chain
Colored Sand
Talcum Powder
Kaolin Powder
Calcined Kaolin
Washed Kaolin
Calcium Carbonate
Heavy Calcium Carbonate
Light Calcium Carbonate
Sericite
Bentonite
Calcium Powder
Aluminium Silicate
Barium Sulfate
Precipitated Barium Sulfate
Natural Barium Sulfate
Mica Powder
Others
Lubricants & Oils Industry Chain
Automotive Lubricants
Gasoline Engine Oil
Diesel Engine Oil
Industrial Lubricants
Hydraulic Oil
Gear Oil
Turbine Oil
Heat Transfer Oil
Compressor Oil
Base Oil
Grease
Fuel Oil
Coal Chemicals Industry Chain
Coal
Coke
Anthracene
Wash Oil
Naphtha
Coal Tar
Light Oil
Solvent Industry Chain
Methanol
Ethanol
Ethylene Glycol
Glycerol
Isopropanol
Acetylene
Styrene
Benzene
Sands & Minerals Industry Chain
River Sand
Lake Sand
Gravel
Natural Sand
Synthetic Sand
Medical Industry Chain
Test Products
Masks
Disposable medical masks
Disposable surgical masks
Filter Mask
Infrared Thermometers
Non-woven Fabrics
Meltblown fabrics
Spunbonded fabrics
Medical coveralls
Medical Goggles
Protective Equipment
Ventilators
Gloves
Testing Supplies
Disinfection & Sterilization Supplies
Health Care Products
Others
Others
Agent Procurement
Coating Industry Chain Products
Alcohol Industry Chain
Glycol
Food Additives
Amino Acid
Vitamins
Preservative
Antioxidants
Sweeteners
Thickeners
Other Additives
HPMC & HEC
Industrial Additives
Dispersant agent
Defoamer
Leveling agent
Curing agent
Adipic Acid
Alcohol Industry Chain Products
Advanced material
Supermarket
Supplier
Quality Supplier
Virtual Reality Showroom
Cross-Border Barter
Industrial Data
Warehouse Logistics
Cross Border Warehousing
Integrated logistics
Trade Assurance
Expo Services
Industry info
Q&A
Wiki
Company news
Platform Information
Domestic and International News
RFQ
WhatsApp
Feedback
App
Download TDD-global App
Scan the QR code to download
TOP
MeroyPollitt
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
Wiki
Q&A
You May Like
HDPE Pipe
TITANIUM DIOXIDE FR-761
Thickened square box
RYTB-32
Vietnam High Whiteness Heavy Calcium Carbonate 400 Mesh
PVC zhongtai SG5
Dextrose Monohydrate food garde
Q&A
•
how do you cut pvc pipe lengthwise
•
what causes coats disease
•
titanium alloy melting point
•
how to dye ultra boost
•
how to repair pvc plastic
Popular Information
•
Market Analysis on LLDPE (March 25)
•
Grasim and Lubrizol to set up 1 lakh MTPA CPVC resin facility in Gujarat
•
HSBC maintains buy on Grasim Industries, lowers target price to Rs 780
•
LG Chem and Dansuk to build Korea’s first next-gen HVO plant
•
Vikas Lifecare’s Infra Materials Division bags Rs. 16 Cr order
You May Like
pipe fitting
Ruiheng PVC Resin SG-5
TO-JH48
Generic Pigment blue 15:3
RY-NR-24-1
Kelong Superfine Calcium Carbonate Powder CC998
Talcum powder plastic grade 2000mesh
Q&A
•
how does imagine ink work
•
how do you finish off coil basket making with yarn
•
what adhesive strengths do surgical paper tape
•
hydraulic oil grade 68 price
•
a polymer of sugar molecules is called a n
Popular Information
•
Falling futures weighed significantly, PE spot market continued its downward trend
•
June 15 price trend summary of domestic plasticizer industry chain related products
•
China PE Prices was Falling Last Week
•
Sasol starts up Louisiana LDPE unit
•
China Tangshan Sanyou Chemical Co., Ltd., caustic soda food additives manufacturer and supplier
Q
do all amino acid have four possible structures except glysine
MeroyPollitt
SidneyIrving
Release Time:
August 18, 2024, 6:16 AM
All amino acids, except for glycine, have the ability to form four distinct structures due to their chiral center at the alpha carbon, making them stereoisomers. This center allows for two configurations, L- and D-, but in proteins, only L-amino acids are used. Glycine is an exception because its side chain is a hydrogen atom, making it achiral and lacking a stereocenter. Therefore, glycine does not have isomeric forms like the other amino acids. The existence of these stereoisomers is crucial in the biochemistry of living organisms as they determine the structure and function of proteins. While all naturally occurring proteins consist of L-amino acids, D-amino acids are found in some peptides produced by non-ribosomal synthesis and in bacterial cell walls, highlighting the importance of the configuration for biological activity.
0
Q
are amino acids considered metabolic waste
MeroyPollitt
Tony
Release Time:
August 16, 2024, 12:14 PM
Amino acids are not considered metabolic waste; rather, they are essential building blocks of proteins crucial for numerous bodily functions. When proteins are digested, amino acids are released and utilized by the body to synthesize new proteins, hormones, and enzymes, or converted into other compounds as needed. Excess amino acids can undergo deamination, where the nitrogen-containing part is removed. This nitrogen is converted into ammonia, which the liver transforms into urea, a true metabolic waste product, subsequently excreted by the kidneys. Thus, while amino acids themselves are valuable and reused, the waste products generated from their metabolism are excreted from the body.
0
Q
are all amino acids optically active
Raise3D_pfMi
MeroyPollitt
Release Time:
August 16, 2024, 6:07 AM
Not all amino acids are optically active. Optical activity arises from asymmetry in molecular structure, enabling compounds to rotate plane-polarized light. Most naturally occurring amino acids, essential for protein synthesis, have an asymmetric carbon atom, making them optically active. However, some amino acids lack this feature. For example, glycine, the simplest amino acid, has no asymmetric carbon and therefore exhibits no optical activity. In contrast, the other 19 standard amino acids used in proteins are optically active due to their asymmetric carbon atoms, which give rise to distinct left-handed (L) and right-handed (D) forms, though life predominantly uses L-forms. Understanding optical activity in amino acids is crucial for biochemistry and pharmaceutical sciences as it impacts biological functions and drug design.
0
Q
how are amino acids incorporated from modules
BerniceGraham
MeroyPollitt
Release Time:
August 14, 2024, 3:37 PM
Amino acids are incorporated into proteins through the process of translation, which involves ribosomes, mRNA, tRNA, and various other molecules. Each amino acid is encoded by specific codons in the mRNA, which are sequences of three nucleotides derived from DNA during transcription. Transfer RNA (tRNA) molecules carry amino acids to the ribosomes, where they are matched to the corresponding codons in the mRNA sequence. The ribosome then catalyzes the formation of peptide bonds between adjacent amino acids, elongating the polypeptide chain until a stop codon is reached, signaling the end of protein synthesis. This modular incorporation allows for the assembly of a vast array of proteins from a relatively small set of amino acids, enabling the complex chemistry of life.
0
Q
is epoxy resin safe for skin
MeroyPollitt
ZoeLeonard
Release Time:
August 11, 2024, 8:59 PM
Epoxy resin, commonly used in crafting, woodworking, and industrial applications, consists of a resin and a hardener that, when mixed, undergo a chemical reaction to form a solid plastic material. While it’s versatile and durable, its safety, particularly regarding skin contact, warrants caution. Uncured epoxy resin can be harmful; it may cause skin irritation, allergic reactions, or dermatitis upon contact. The extent of skin reaction varies with individual sensitivity and the duration of exposure. It’s crucial to use protective gloves and work in a well-ventilated area to minimize risks. Once fully cured, epoxy resin is generally considered safe and is less likely to cause skin irritation. However, it’s advisable to always follow the manufacturer’s safety instructions and utilize appropriate personal protective equipment (PPE) to ensure safety during its application.
0
Q
what is superfine yarn
MeroyPollitt
IanPerkin
Release Time:
August 11, 2024, 8:42 PM
Superfine yarn refers to a category of yarn characterized by its exceptionally thin threads, which are finer than what is typically found in standard yarn classifications. This fine quality allows for the creation of lightweight, densely knitted or woven fabrics ideal for luxury clothing and intricate textile projects. Superfine yarn often results from using high-quality fibers such as merino wool, silk, or synthetic blends designed to mimic these premium materials. Due to its delicate nature, it requires careful handling during the knitting or weaving process but produces garments with superior softness, drape, and detail resolution. Ideal for projects aiming for a refined finish, superfine yarn is a favorite among experienced knitters and designers seeking to elevate their work.
0
Q
what is a yarn counter
MeroyPollitt
AstridGrantham
Release Time:
August 8, 2024, 3:00 AM
A yarn counter is an instrument used to measure the length or yardage of yarn. It is essential in the textile industry for maintaining consistency and quality in production. The yarn counter works by feeding the yarn through a guiding mechanism, which then counts the yards or meters as it passes through. There are several types, including mechanical and electronic counters. Mechanical counters typically use a wheel that turns with the movement of the yarn, advancing the count with each revolution. Electronic counters, on the other hand, utilize sensors to more accurately measure the length. Yarn counters are invaluable for anyone involved in textiles, from weavers and knitters to manufacturers, ensuring precise measurements for crafting, production, or even packaging purposes. They help avoid wastage, save time, and contribute to the overall efficiency of fabric production processes.
0
Q
how good are polymer lower receivers
MeroyPollitt
MaggieChurchill
Release Time:
August 4, 2024, 6:17 AM
Polymer lower receivers have gained popularity in the firearm community for their lightweight and corrosion-resistant characteristics, making them appealing for certain applications. Originally, skepticism surrounded their durability compared to traditional aluminum or steel receivers, given polymer’s perceived inferior strength. However, advancements in polymer technology and design have significantly improved their resilience and reliability. High-quality polymer lowers can withstand substantial use and stress, rivaling metal counterparts in some scenarios. Nevertheless, they might not suit all purposes, especially in high-stress or extreme environmental conditions where metal’s superior strength and thermal tolerance are necessary. It’s essential to consider the intended use and to choose a reputable manufacturer to ensure the best performance and safety. Ultimately, while polymer lowers offer definite advantages, particularly in weight and corrosion resistance, th...
0
Q
how many chiral carbons are in amino acid
MeroyPollitt
PeterToynbee
Release Time:
August 1, 2024, 2:10 PM
The number of chiral carbons in amino acids differs based on the specific amino acid in question. In general, the 20 standard amino acids that are used to build proteins have one chiral carbon each, known as the alpha (α) carbon, to which the amino group (NH2), carboxyl group (COOH), hydrogen atom (H), and variable side chain (R) are attached. This configuration allows for the existence of different isomers, specifically L and D enantiomers, of which only L-amino acids are commonly found in proteins of living organisms. However, there are exceptions; for instance, glycine does not have a chiral carbon because its side chain is a hydrogen atom, making it achiral. Additionally, some non-standard amino acids, like isoleucine and threonine, have more than one chiral carbon due to their complex side chains.
0
Q
what is the molecular weight of polyethylene
VerneHaywood
MeroyPollitt
Release Time:
July 30, 2024, 9:34 AM
Polyethylene (PE) is a versatile polymer widely utilized in various applications, from packaging materials to engineering plastics. The molecular weight of polyethylene can significantly vary, ranging from as low as 6,000 g/mol for low-density polyethylene (LDPE) to over 1,000,000 g/mol for ultra-high-molecular-weight polyethylene (UHMWPE). The diversity in molecular weight allows polyethylene to cater to a wide array of mechanical and chemical properties, making it suitable for different applications. Lower molecular weight PE tends to be softer and more pliable, useful for plastic bags and packaging films, whereas higher molecular weight PE is used in high-strength materials, like bulletproof vests and orthopedic implants, due to its superior toughness and wear resistance.
0
You May Like
PET RESIN
PET RESIN
High Quality BALSA WOOD
Vitamin K1 Powder
GBASEA Natural Barium Sulfate Extinction B100
ZF500 American Style 500ml 750ml 10000ml Disposable Food Container Black Square PP Plastic Take Away Bento Lunch Box
Diatomaceous Earth Powder
Q&A
•
what does emulsion paint mean
•
what is the first amino acid in proteins
•
which side to print of premium coated inkjet canvas
•
do i need a ink cartrige in to scan
•
what is destash yarn
Popular Information
•
China PE Prices slightly Increased Last Week (July 17-21)
•
Report on AMAI’s conference on ‘New Developments in Chlor-alkali Industry’
•
Wood secures FEED contract for Chandra Asri’s CAP2 petchem complex
•
Supply Shortage, China PE Spot Market Rise
•
Grasim swears by cement biz: Q3 takeaways
Links
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com
About Cookies On This Site
We use cookies to give you the best possible experience on our website. For more details including how to change your cookie settings, please read our
Cookies Policy
I understand
Cookie Settings