Shenzhen Shijingu Technology Co., Ltd., as an emerging pharmaceutical company, we are committed to offering stable high quality steroids. All batches of powders and semi-finished oils are tested with HPLC before sales to ensure high purity and accurate dosage. Any quality disputable items will be recalled and retested. At the meantime, the latest batch of quality items will be sent to customers for testing for free. If it doesn't meet regulation standard, the batch will be immediately withdrawn.