Tryptophan
Total 288
manufacturers & suppliers found with 864 products
Polifar Group Limited
Since 2013 Suppliers with verified business licenses
5.0
Audited Supplier
500
Plant Area
31
Number of Employees
Trading Company
Fumaric Acid Food Grade; DL-Methionine; L-Threonine Granule; L-Lysine Sulphate
ISO9001:2015, Food Safety Management System Certification, FAMI-QS Certificate
Nanjing, Jiangsu
-
US$ 9.1 / kg5000 kg (MOQ) -
US$ 9.12 / kg2000 kg (MOQ)
-
US$ 9.08 / kg5000 kg (MOQ)
Nutricorn Co., Limited
Since 2013 Suppliers with verified business licenses
4.0
Manufacturer/Factory
, Trading Company
Lysine
, Monosodium Glutamate
, Xanthan Gum
, Gellan Gum
, Corn Gluten Meal
OEM, ODM
ISO 9001, ISO 14000, GMP, HACCP, ISO 22000
-
US$ 7000 / Ton1 Ton (MOQ)
-
US$ 7000 / Ton1 Ton (MOQ)
-
US$ 7000 / Ton1 Ton (MOQ)
Tianjin Dongfang Import and Export Co., Ltd.
Since 2022 Suppliers with verified business licenses
5.0
54
Plant Area
5
Number of Employees
Trading Company
L-carnitine
, L-Histidine
, Creatine Monohydrate
, Nicotinamide Mononucleotide
, Kojic Acid
OEM, ODM, Own Brand
Nil
-
US$ 10 / kg1 kg (MOQ)
-
US$ 10 / kg1 kg (MOQ)
-
US$ 10 / kg1 kg (MOQ)
Manufacturer/Factory
, Trading Company
L-Lysine
, L-Threonine
, L-Lysine Sulphate
, L-Valine
, L-Tryptophan
ISO 9001, ISO 9000, GMP
within 15 workdays
-
US$ 7 / kg10000 kg (MOQ)
-
US$ 7 / kg10000 kg (MOQ)
-
US$ 7 / kg10000 kg (MOQ)
QINGDAO ROYAL DECOR INDUSTRY CO., LTD.
Since 2019 Suppliers with verified business licenses
4.0
Audited Supplier
40.25 Mil
Annual Revenue
150
Plant Area
10
Number of Employees
Trading Company
Lysine
, DCP
, Mcp
, MDCP
, Choline Chloride
ODM, OEM
ISO 9001, ISO 14001, GMP, HACCP
-
US$ 280 / Ton20 Tons (MOQ)
-
US$ 950 / Ton20 Tons (MOQ)
-
US$ 280 / Ton20 Tons (MOQ)
Manufacturer/Factory
Vitamin a Palmitate Supplier
, Vitamin E Oil
, Sodium Erythorbate Powder
, Dexpanthenol
, D-Biotin Suppliers
OEM, ODM, Own Brand
ISO 9001
-
US$ 20 / kg100 kg (MOQ)
-
US$ 48 / kg100 kg (MOQ)
-
US$ 20 / kg100 kg (MOQ)
Manufacturer/Factory
L-Lysine HCl 98.5% Feed Grade
, L-Threonine 98.5% Feed Grade
, L-Lysine Sulphate 70% Feed Grade
, L-Valine Feed Grade
, L-Tryptophan Feed Grade
Own Brand
ISO 9000, ISO 14001
-
US$ 100 / Ton20 Tons (MOQ)
-
Negotiable1 Ton (MOQ)
-
US$ 100 / Ton20 Tons (MOQ)
HEBEI RUNXUCHEN TRADING CO., LTD.
Since 2022 Suppliers with verified business licenses
5.0
85
Plant Area
4
Number of Employees
Trading Company
PVC
, PET
OEM, ODM
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000
-
US$ 2 / kg500 kg (MOQ)
-
US$ 2 / kg500 kg (MOQ)
-
US$ 2 / kg500 kg (MOQ)
Xilong Scientific Co., Ltd.
Since 2013 Suppliers with verified business licenses
5.0
6183.21 Mil
Annual Revenue
2000+
Plant Area
306
Number of Employees
Manufacturer/Factory
, Trading Company
chemical Reagent
Own Brand
ISO9001:2015, ISO14001:2015, ISO45001:2016
-
US$ 30 / kg100 kg (MOQ)
-
US$ 30 / kg100 kg (MOQ)
-
US$ 30 / kg100 kg (MOQ)
Manufacturer/Factory
, Trading Company
Glutathione
, Nmn
, Pharmaceutical Intermediates
, Cosmetic Materials
, Nutritional Supplements
Own Brand
ISO 9001, ISO 14001
-
US$ 10 / kg1 kg (MOQ)
-
US$ 10 / kg1 kg (MOQ)
-
US$ 10 / kg1 kg (MOQ)
Shandong WorldSun Biological Technology Co., Ltd.
Since 2022 Suppliers with verified business licenses
5.0
100
Plant Area
15
Number of Employees
Trading Company
Daily Chemicals
, Organic Intermediate
, Surfactant
, Additive
, Flavors and Fragrances
OEM, ODM, Own Brand
ISO9001:2015
-
US$ 5 / kg1 kg (MOQ)
-
US$ 5 / kg1 kg (MOQ)
-
US$ 5 / kg1 kg (MOQ)
Anhui Victor Chemical Co., Ltd.
Since 2020 Suppliers with verified business licenses
4.0
166
Plant Area
3
Number of Employees
Trading Company
Vitamins
, Strong Food Additives
OEM, Own Brand
Response Time≤3h
-
US$ 1 / Piece1 Piece (MOQ)
-
US$ 1 / Piece1 Piece (MOQ)
-
US$ 1 / Piece1 Piece (MOQ)
Ningbo Newrainbow Biochemicals Co., Ltd.
Since 2021 Suppliers with verified business licenses
4.0
74
Plant Area
5
Number of Employees
Trading Company
Amino Acids
, Vitamins
, Plant Extract
, Pharmaceutical Raw Materials
ISO 9001, ISO 9000, ISO 14001, ISO 14000
within 15 workdays
-
US$ 1 / kg10 kg (MOQ)
-
US$ 1 / kg10 kg (MOQ)
-
US$ 1 / kg10 kg (MOQ)
Tianjin Boda Import & Export Co., Ltd.
Since 2023 Suppliers with verified business licenses
5.0
97
Plant Area
4
Number of Employees
Trading Company
Food Additive
Tianjin, Tianjin
-
US$ 12 / kg1 kg (MOQ)
-
US$ 12 / kg1 kg (MOQ)
-
US$ 12 / kg1 kg (MOQ)
Manufacturer/Factory
, Trading Company
Vitamin a
, Vitamin B1 B2 B3
, Vitamin B5
, Vitamin B6
, Biotin
Own Brand
ISO 9001, ISO 14001, ISO 20000
-
US$ 0.1 / kg1000 kg (MOQ)
-
US$ 0.1 / kg1000 kg (MOQ)
-
US$ 0.1 / kg1000 kg (MOQ)
Shandong Natural Micron Pharm Tech Co., Ltd.
Since 2021 Suppliers with verified business licenses
5.0
300
Plant Area
17
Number of Employees
Manufacturer/Factory
, Trading Company
Supplement Ingredients
, Cosmetic Raw Materials
, Pharmaceutical Intermediates
ODM, OEM
Nil
-
US$ 110 / kg1 kg (MOQ)
-
US$ 140 / kg1 kg (MOQ)
-
US$ 60 / kg1 kg (MOQ)
Manufacturer/Factory
, Trading Company
Amino Acids
, Vitamins
, Food Ingredients
, Feed Additives
, Nutritional Supplements
OEM, ODM, Own Brand
ISO 9001, ISO 14001, ISO 20000, GMP, HACCP...
-
US$ 1 / kg25 kg (MOQ)
-
US$ 2 / kg1 kg (MOQ)
-
US$ 5 / Piece1 Piece (MOQ)
Henan Sinowin Chemical Industry Co., Ltd.
Since 2020 Suppliers with verified business licenses
4.0
320
Plant Area
25
Number of Employees
Trading Company
Food additive
, water treatment chemical
, detergent chemical
, painting & coating
, solvent
OEM, ODM
ISO 9001, ISO 9000, ISO 20000
-
US$ 11 / kg1000 kg (MOQ)
-
US$ 11 / kg1000 kg (MOQ)
-
US$ 11 / kg1000 kg (MOQ)
Manufacturer/Factory
, Trading Company
Amino Acid
, Antioxidant
, Mineral Substance
, Emulsifier
, Sweetener
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000...
within 15 workdays
-
US$ 17.9 / kg100 kg (MOQ)
-
US$ 17.9 / kg100 kg (MOQ)
-
US$ 17 / kg100 kg (MOQ)
Xi'an Sonwu Biotech Co., Ltd.
Since 2021 Suppliers with verified business licenses
5.0
Manufacturer/Factory
API
, Nootropics
, Dietary Supplement
, Plant Extract
, Peptides
OEM
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000...
-
US$ 28 / kg1 kg (MOQ)
-
US$ 28 / kg1 kg (MOQ)
-
US$ 26 / kilogram1 kilogram (MOQ)
Manufacturer/Factory
Peptide
, Nootropics
, Supplements
, Plant Extracts
, Nmn
OEM, ODM, Own Brand
ISO 9001, GMP
-
US$ 30 / kg1 kg (MOQ)
-
US$ 200 / kg1 kg (MOQ)
-
US$ 30 / Gram100 Gram (MOQ)
Manufacturer/Factory
Food Additive
, Raw Powder
, Monobenzone
, Cosmetic
, Vitamin
OEM, ODM
ISO 9001, GMP
-
US$ 60 / kg1 kg (MOQ)
-
US$ 60 / kg1 kg (MOQ)
-
US$ 60 / kg1 kg (MOQ)
Hebei Xinjiu Additives Co., Ltd.
Since 2024 Suppliers with verified business licenses
5.0
Manufacturer/Factory
, Trading Company
Additive
, Cosmetic
, DHA
, Xanthan Gum
, Nicotinamide
ISO 9001, ISO 9000
Xingtai, Hebei
-
US$ 1 / kg1 kg (MOQ)
-
US$ 1 / kg1 kg (MOQ)
-
US$ 2 / kg1 kg (MOQ)
Trading Company
Peptide
, Flavor & Fragrance
, Chemical Intermediates
, Food Additives
, Cosmetic Materials
OEM
ISO 9001, GMP
-
US$ 50 / kg1 kg (MOQ)
-
US$ 1 / gram1 gram (MOQ)
-
US$ 145 / kg1 kg (MOQ)
Wuhan Godbullraw Chemical Co., Ltd.
Since 2022 Suppliers with verified business licenses
5.0
113
Plant Area
6
Number of Employees
Trading Company
Steroids
, Peptide
, API Intermediate
OEM, ODM
ISO 9001, GMP, PAS 28000
-
US$ 0.1 / g10 g (MOQ)
-
US$ 1 / g1 g (MOQ)
-
US$ 1 / gram10 gram (MOQ)
Manufacturer/Factory
Estradiol
, Flibanserin
, Dutasteride
, Noopept
, Cdp-Choline
OEM
ISO 9001, ISO 14001, GMP, HACCP
-
US$ 5 / kg1 kg (MOQ)
-
US$ 5 / kg1 kg (MOQ)
-
US$ 5 / kg1 kg (MOQ)
Manufacturer/Factory
Sodium Butyrate
, Vitamin
, Colorant
, Amino Acid
, Plant Extract
OEM
ISO 9001, ISO 20000, GMP, ISO 22000
-
US$ 8 / kg100 kg (MOQ)
-
US$ 8 / kg100 kg (MOQ)
-
US$ 8 / kg100 kg (MOQ)
Manufacturer/Factory
Citric Acid
, Erythritol
, Acesulfame
, Nisin
, Sucralose
Own Brand
ISO 9001, ISO 14000, GMP, QHSE, HACCP...
-
US$ 6 / kg100 kg (MOQ)
-
US$ 6 / kg100 kg (MOQ)
-
US$ 6 / kg100 kg (MOQ)
Manufacturer/Factory
, Trading Company
Melatonin
, Chemical
, Melatonin Powder
, Dietary Supplement
, Nutritional Supplement
Own Brand
Response Time≤3h
-
US$ 92 / kg1 kg (MOQ)
-
US$ 15 / kg1 kg (MOQ)
-
US$ 10 / kg1 kg (MOQ)
Manufacturer/Factory
Nmn
, Pharmaceutical Intermediates
, Melatonin
, Lidocaine
, Coenzyme Q10
OEM, ODM
ISO 9001, GMP, HACCP, ISO 22000
-
US$ 15 / kg1 kg (MOQ)
-
US$ 15 / kg25 kg (MOQ)
-
US$ 17 / kg25 kg (MOQ)
Audited Supplier
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